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48800981 = 49199391
BaseRepresentation
bin1011101000101…
…0010011010101
310101211100100202
42322022103111
544443112411
64501550245
71131541625
oct272122325
9111740322
1048800981
1125601999
1214415385
13a158728
1466a4885
15443e83b
hex2e8a4d5

48800981 has 4 divisors (see below), whose sum is σ = 48900864. Its totient is φ = 48701100.

The previous prime is 48800957. The next prime is 48801007. The reversal of 48800981 is 18900884.

48800981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 48800981 - 210 = 48799957 is a prime.

It is a super-2 number, since 2×488009812 = 4763071493124722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48800581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49205 + ... + 50186.

It is an arithmetic number, because the mean of its divisors is an integer number (12225216).

Almost surely, 248800981 is an apocalyptic number.

It is an amenable number.

48800981 is a deficient number, since it is larger than the sum of its proper divisors (99883).

48800981 is an equidigital number, since it uses as much as digits as its factorization.

48800981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99882.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 48800981 is about 6985.7698931471. The cubic root of 48800981 is about 365.4344760504.

The spelling of 48800981 in words is "forty-eight million, eight hundred thousand, nine hundred eighty-one".

Divisors: 1 491 99391 48800981