90546551 has 4 divisors (see below), whose sum is σ = 90712632. Its totient is φ = 90380472.

The previous prime is 90546541. The next prime is 90546557. The reversal of 90546551 is 15564509.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15564509 = 157 ⋅99137.

It is a cyclic number.

It is not a de Polignac number, because 90546551 - 2²² = 86352247 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 (90546557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82220 + ... + 83313.

It is an arithmetic number, because the mean of its divisors is an integer number (22678158).

Almost surely, 2^90546551 is an apocalyptic number.

90546551 is a deficient number, since it is larger than the sum of its proper divisors (166081).

90546551 is a wasteful number, since it uses less digits than its factorization.

90546551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166080.

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

The square root of 90546551 is about 9515.5951469154. The cubic root of 90546551 is about 449.0457986725.

The spelling of 90546551 in words is "ninety million, five hundred forty-six thousand, five hundred fifty-one".