54891331 has 4 divisors (see below), whose sum is σ = 59881464. Its totient is φ = 49901200.

The previous prime is 54891329. The next prime is 54891377. The reversal of 54891331 is 13319845.

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 54891331 - 2¹ = 54891329 is a prime.

It is a super-2 number, since 2×54891331² = 6026116437903122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54891301) 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, 2495050 + ... + 2495071.

It is an arithmetic number, because the mean of its divisors is an integer number (14970366).

Almost surely, 2^54891331 is an apocalyptic number.

54891331 is a deficient number, since it is larger than the sum of its proper divisors (4990133).

54891331 is a wasteful number, since it uses less digits than its factorization.

54891331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4990132.

The product of its digits is 12960, while the sum is 34.

The square root of 54891331 is about 7408.8684021246. The cubic root of 54891331 is about 380.0446184912.

The spelling of 54891331 in words is "fifty-four million, eight hundred ninety-one thousand, three hundred thirty-one".