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92131657 = 4492457
BaseRepresentation
bin1010111110111…
…01000101001001
320102100202212121
411133131011021
5142041203112
613050411241
72166051262
oct537350511
9212322777
1092131657
1148007972
1226a30b21
131611a297
14c343969
15814d407
hex57dd149

92131657 has 6 divisors (see below), whose sum is σ = 92539358. Its totient is φ = 91725312.

The previous prime is 92131651. The next prime is 92131661. The reversal of 92131657 is 75613129.

It can be written as a sum of positive squares in 3 ways, for example, as 39075001 + 53056656 = 6251^2 + 7284^2 .

It is a de Polignac number, because none of the positive numbers 2k-92131657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (92131651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 201373 + ... + 201829.

Almost surely, 292131657 is an apocalyptic number.

It is an amenable number.

92131657 is a deficient number, since it is larger than the sum of its proper divisors (407701).

92131657 is an frugal number, since it uses more digits than its factorization.

92131657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355 (or 906 counting only the distinct ones).

The product of its digits is 11340, while the sum is 34.

The square root of 92131657 is about 9598.5236885679. The cubic root of 92131657 is about 451.6509839343.

The spelling of 92131657 in words is "ninety-two million, one hundred thirty-one thousand, six hundred fifty-seven".

Divisors: 1 449 457 201601 205193 92131657