55033491 has 4 divisors (see below), whose sum is σ = 73377992. Its totient is φ = 36688992.

The previous prime is 55033483. The next prime is 55033499. The reversal of 55033491 is 19433055.

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

It is an interprime number because it is at equal distance from previous prime (55033483) and next prime (55033499).

It is not a de Polignac number, because 55033491 - 2³ = 55033483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55033499) 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, 9172246 + ... + 9172251.

It is an arithmetic number, because the mean of its divisors is an integer number (18344498).

Almost surely, 2^55033491 is an apocalyptic number.

55033491 is a deficient number, since it is larger than the sum of its proper divisors (18344501).

55033491 is a wasteful number, since it uses less digits than its factorization.

55033491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18344500.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 55033491 is about 7418.4561062259. The cubic root of 55033491 is about 380.3724211293.

The spelling of 55033491 in words is "fifty-five million, thirty-three thousand, four hundred ninety-one".