525553157 has 2 divisors, whose sum is σ = 525553158. Its totient is φ = 525553156.

The previous prime is 525553123. The next prime is 525553177. The reversal of 525553157 is 751355525.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 381577156 + 143976001 = 19534^2 + 11999^2 .

It is a cyclic number.

It is not a de Polignac number, because 525553157 - 2²⁸ = 257117701 is a prime.

It is a super-2 number, since 2×525553157² = 552412241665333298, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 525553157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525553177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262776578 + 262776579.

It is an arithmetic number, because the mean of its divisors is an integer number (262776579).

Almost surely, 2^525553157 is an apocalyptic number.

It is an amenable number.

525553157 is a deficient number, since it is larger than the sum of its proper divisors (1).

525553157 is an equidigital number, since it uses as much as digits as its factorization.

525553157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131250, while the sum is 38.

The square root of 525553157 is about 22924.9461722378. The cubic root of 525553157 is about 806.9975503407.

The spelling of 525553157 in words is "five hundred twenty-five million, five hundred fifty-three thousand, one hundred fifty-seven".