54872840 has 64 divisors (see below), whose sum is σ = 135457920. Its totient is φ = 19840000.

The previous prime is 54872833. The next prime is 54872863. The reversal of 54872840 is 4827845.

54872840 = T₂₆₃ + T₂₆₄ + ... + T₇₀₂.

It is a super-2 number, since 2×54872840² = 6022057139331200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 54872794 and 54872803.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136640 + ... + 137040.

It is an arithmetic number, because the mean of its divisors is an integer number (2116530).

Almost surely, 2^54872840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54872840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67728960).

54872840 is an abundant number, since it is smaller than the sum of its proper divisors (80585080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54872840 is a wasteful number, since it uses less digits than its factorization.

54872840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 54872840 is about 7407.6204006415. The cubic root of 54872840 is about 380.0019390483.

The spelling of 54872840 in words is "fifty-four million, eight hundred seventy-two thousand, eight hundred forty".