90047157 has 16 divisors (see below), whose sum is σ = 126044160. Its totient is φ = 57106800.

The previous prime is 90047149. The next prime is 90047171. The reversal of 90047157 is 75174009.

It is not a de Polignac number, because 90047157 - 2³ = 90047149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90047057) 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 15 ways as a sum of consecutive naturals, for example, 2719 + ... + 13692.

It is an arithmetic number, because the mean of its divisors is an integer number (7877760).

Almost surely, 2^90047157 is an apocalyptic number.

It is an amenable number.

90047157 is a deficient number, since it is larger than the sum of its proper divisors (35997003).

90047157 is a wasteful number, since it uses less digits than its factorization.

90047157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16504.

The product of its (nonzero) digits is 8820, while the sum is 33.

The square root of 90047157 is about 9489.3180471518. The cubic root of 90047157 is about 448.2187312129.

It can be divided in two parts, 9004 and 7157, that added together give a palindrome (16161).

The spelling of 90047157 in words is "ninety million, forty-seven thousand, one hundred fifty-seven".