54872991 has 16 divisors (see below), whose sum is σ = 86076000. Its totient is φ = 34429824.

The previous prime is 54872929. The next prime is 54872999. The reversal of 54872991 is 19927845.

It is not a de Polignac number, because 54872991 - 2⁶ = 54872927 is a prime.

It is a super-2 number, since 2×54872991² = 6022090282572162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54872999) 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, 59316 + ... + 60233.

It is an arithmetic number, because the mean of its divisors is an integer number (5379750).

Almost surely, 2^54872991 is an apocalyptic number.

54872991 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

54872991 is a deficient number, since it is larger than the sum of its proper divisors (31203009).

54872991 is a wasteful number, since it uses less digits than its factorization.

54872991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119575 (or 119569 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 54872991 is about 7407.6305928414. The cubic root of 54872991 is about 380.0022876132.

The spelling of 54872991 in words is "fifty-four million, eight hundred seventy-two thousand, nine hundred ninety-one".