90015552 has 84 divisors (see below), whose sum is σ = 281488896. Its totient is φ = 27275520.

The previous prime is 90015551. The next prime is 90015553. The reversal of 90015552 is 25551009.

It is an interprime number because it is at equal distance from previous prime (90015551) and next prime (90015553).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90015551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 768 + ... + 13439.

Almost surely, 2^90015552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90015552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140744448).

90015552 is an abundant number, since it is smaller than the sum of its proper divisors (191473344).

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

90015552 is a wasteful number, since it uses less digits than its factorization.

90015552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14236 (or 14223 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 90015552 is about 9487.6526074683. The cubic root of 90015552 is about 448.1662860604.

The spelling of 90015552 in words is "ninety million, fifteen thousand, five hundred fifty-two".