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48707977 = 173281549
BaseRepresentation
bin1011100111001…
…1100110001001
310101122121210011
42321303212021
544432123402
64455551521
71131003523
oct271634611
9111577704
1048707977
112554902a
121438b5a1
13a1252b6
14667ca13
154421ed7
hex2e73989

48707977 has 4 divisors (see below), whose sum is σ = 48989700. Its totient is φ = 48426256.

The previous prime is 48707921. The next prime is 48707987. The reversal of 48707977 is 77970784.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42302016 + 6405961 = 6504^2 + 2531^2 .

It is a cyclic number.

It is not a de Polignac number, because 48707977 - 223 = 40319369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 48707977.

It is not an unprimeable number, because it can be changed into a prime (48707987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140602 + ... + 140947.

It is an arithmetic number, because the mean of its divisors is an integer number (12247425).

Almost surely, 248707977 is an apocalyptic number.

It is an amenable number.

48707977 is a deficient number, since it is larger than the sum of its proper divisors (281723).

48707977 is a wasteful number, since it uses less digits than its factorization.

48707977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281722.

The product of its (nonzero) digits is 691488, while the sum is 49.

The square root of 48707977 is about 6979.1100435514. The cubic root of 48707977 is about 365.2021823498.

The spelling of 48707977 in words is "forty-eight million, seven hundred seven thousand, nine hundred seventy-seven".

Divisors: 1 173 281549 48707977