90547331 has 16 divisors (see below), whose sum is σ = 109781760. Its totient is φ = 72951840.

The previous prime is 90547313. The next prime is 90547337. The reversal of 90547331 is 13374509.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 90547331 - 2¹⁰ = 90546307 is a prime.

It is a super-2 number, since 2×90547331² = 16397638302447122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90547337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14825 + ... + 20021.

It is an arithmetic number, because the mean of its divisors is an integer number (6861360).

Almost surely, 2^90547331 is an apocalyptic number.

90547331 is a deficient number, since it is larger than the sum of its proper divisors (19234429).

90547331 is a wasteful number, since it uses less digits than its factorization.

90547331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5354.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 90547331 is about 9515.6361321774. The cubic root of 90547331 is about 449.0470880819.

The spelling of 90547331 in words is "ninety million, five hundred forty-seven thousand, three hundred thirty-one".