90155607 has 32 divisors (see below), whose sum is σ = 133954560. Its totient is φ = 53644800.

The previous prime is 90155537. The next prime is 90155617. The reversal of 90155607 is 70655109.

It is not a de Polignac number, because 90155607 - 2¹⁰ = 90154583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90155617) 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 31 ways as a sum of consecutive naturals, for example, 176869 + ... + 177377.

It is an arithmetic number, because the mean of its divisors is an integer number (4186080).

Almost surely, 2^90155607 is an apocalyptic number.

90155607 is a deficient number, since it is larger than the sum of its proper divisors (43798953).

90155607 is a wasteful number, since it uses less digits than its factorization.

90155607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703.

The product of its (nonzero) digits is 9450, while the sum is 33.

The square root of 90155607 is about 9495.0306476599. The cubic root of 90155607 is about 448.3985992641.

The spelling of 90155607 in words is "ninety million, one hundred fifty-five thousand, six hundred seven".