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252401983 = 1731458971
BaseRepresentation
bin11110000101101…
…01100100111111
3122120221100102121
433002311210333
51004103330413
641013503411
76153244561
oct1702654477
9576840377
10252401983
1111a524389
1270641b67
13403a3ab2
1425743331
151725ab8d
hexf0b593f

252401983 has 4 divisors (see below), whose sum is σ = 253861128. Its totient is φ = 250942840.

The previous prime is 252401971. The next prime is 252401999. The reversal of 252401983 is 389104252.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-252401983 is a prime.

It is a super-2 number, since 2×2524019832 = 127413522044664578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252401183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 729313 + ... + 729658.

It is an arithmetic number, because the mean of its divisors is an integer number (63465282).

Almost surely, 2252401983 is an apocalyptic number.

252401983 is a deficient number, since it is larger than the sum of its proper divisors (1459145).

252401983 is a wasteful number, since it uses less digits than its factorization.

252401983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459144.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 252401983 is about 15887.1640955836. The cubic root of 252401983 is about 631.9716370530.

The spelling of 252401983 in words is "two hundred fifty-two million, four hundred one thousand, nine hundred eighty-three".

Divisors: 1 173 1458971 252401983