90154631 has 8 divisors (see below), whose sum is σ = 103787040. Its totient is φ = 76710528.

The previous prime is 90154609. The next prime is 90154637. The reversal of 90154631 is 13645109.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90154631 - 2¹⁰ = 90153607 is a prime.

It is a super-2 number, since 2×90154631² = 16255714981492322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90154594 and 90154603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90154637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46046 + ... + 47963.

It is an arithmetic number, because the mean of its divisors is an integer number (12973380).

Almost surely, 2^90154631 is an apocalyptic number.

90154631 is a deficient number, since it is larger than the sum of its proper divisors (13632409).

90154631 is a wasteful number, since it uses less digits than its factorization.

90154631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94153.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 90154631 is about 9494.9792522154. The cubic root of 90154631 is about 448.3969811780.

The spelling of 90154631 in words is "ninety million, one hundred fifty-four thousand, six hundred thirty-one".