90654551 has 32 divisors (see below), whose sum is σ = 106357440. Its totient is φ = 76640256.

The previous prime is 90654547. The next prime is 90654559. The reversal of 90654551 is 15545609.

It is a cyclic number.

It is not a de Polignac number, because 90654551 - 2² = 90654547 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90654559) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 934535 + ... + 934631.

It is an arithmetic number, because the mean of its divisors is an integer number (3323670).

Almost surely, 2^90654551 is an apocalyptic number.

90654551 is a deficient number, since it is larger than the sum of its proper divisors (15702889).

90654551 is a wasteful number, since it uses less digits than its factorization.

90654551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 90654551 is about 9521.2683503827. The cubic root of 90654551 is about 449.2242618564.

The spelling of 90654551 in words is "ninety million, six hundred fifty-four thousand, five hundred fifty-one".