90737551 has 8 divisors (see below), whose sum is σ = 98419104. Its totient is φ = 83316480.

The previous prime is 90737533. The next prime is 90737567. The reversal of 90737551 is 15573709.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90737551 - 2⁵ = 90737519 is a prime.

It is a super-2 number, since 2×90737551² = 16466606322955202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90737551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90737501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64395 + ... + 65788.

It is an arithmetic number, because the mean of its divisors is an integer number (12302388).

Almost surely, 2^90737551 is an apocalyptic number.

90737551 is a deficient number, since it is larger than the sum of its proper divisors (7681553).

90737551 is a wasteful number, since it uses less digits than its factorization.

90737551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130241.

The product of its (nonzero) digits is 33075, while the sum is 37.

The square root of 90737551 is about 9525.6260161734. The cubic root of 90737551 is about 449.3613178195.

The spelling of 90737551 in words is "ninety million, seven hundred thirty-seven thousand, five hundred fifty-one".