55089331 has 4 divisors (see below), whose sum is σ = 60097464. Its totient is φ = 50081200.

The previous prime is 55089329. The next prime is 55089361. The reversal of 55089331 is 13398055.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55089331 - 2¹ = 55089329 is a prime.

It is a super-2 number, since 2×55089331² = 6069668780055122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55089361) 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, 2504050 + ... + 2504071.

It is an arithmetic number, because the mean of its divisors is an integer number (15024366).

Almost surely, 2^55089331 is an apocalyptic number.

55089331 is a deficient number, since it is larger than the sum of its proper divisors (5008133).

55089331 is a wasteful number, since it uses less digits than its factorization.

55089331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5008132.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 55089331 is about 7422.2187383558. The cubic root of 55089331 is about 380.5010265530.

The spelling of 55089331 in words is "fifty-five million, eighty-nine thousand, three hundred thirty-one".