55931736 has 96 divisors (see below), whose sum is σ = 164160000. Its totient is φ = 15833664.

The previous prime is 55931713. The next prime is 55931761. The reversal of 55931736 is 63713955.

Its product of digits (85050) is a multiple of the sum of its prime divisors (450).

It is a junction number, because it is equal to n+sod(n) for n = 55931694 and 55931703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 233905 + ... + 234143.

It is an arithmetic number, because the mean of its divisors is an integer number (1710000).

Almost surely, 2^55931736 is an apocalyptic number.

55931736 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55931736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82080000).

55931736 is an abundant number, since it is smaller than the sum of its proper divisors (108228264).

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

55931736 is a wasteful number, since it uses less digits than its factorization.

55931736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461 (or 450 counting only the distinct ones).

The product of its digits is 85050, while the sum is 39.

The square root of 55931736 is about 7478.7523023563. The cubic root of 55931736 is about 382.4307158033.

The spelling of 55931736 in words is "fifty-five million, nine hundred thirty-one thousand, seven hundred thirty-six".