90551630 has 32 divisors (see below), whose sum is σ = 181591200. Its totient is φ = 32280192.

The previous prime is 90551623. The next prime is 90551677. The reversal of 90551630 is 3615509.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 90551593 and 90551602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8240 + ... + 15779.

It is an arithmetic number, because the mean of its divisors is an integer number (5674725).

Almost surely, 2^90551630 is an apocalyptic number.

90551630 is an abundant number, since it is smaller than the sum of its proper divisors (91039570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90551630 is a wasteful number, since it uses less digits than its factorization.

90551630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24068.

The product of its (nonzero) digits is 4050, while the sum is 29.

The square root of 90551630 is about 9515.8620208576. The cubic root of 90551630 is about 449.0541945785.

The spelling of 90551630 in words is "ninety million, five hundred fifty-one thousand, six hundred thirty".