55731700 has 36 divisors (see below), whose sum is σ = 122071180. Its totient is φ = 22083840.

The previous prime is 55731679. The next prime is 55731701. The reversal of 55731700 is 713755.

It can be written as a sum of positive squares in 6 ways, for example, as 7817616 + 47914084 = 2796^2 + 6922^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55731701) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8344 + ... + 13456.

Almost surely, 2^55731700 is an apocalyptic number.

55731700 is a gapful number since it is divisible by the number (50) 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 55731700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61035590).

55731700 is an abundant number, since it is smaller than the sum of its proper divisors (66339480).

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

55731700 is a wasteful number, since it uses less digits than its factorization.

55731700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5236 (or 5229 counting only the distinct ones).

The product of its (nonzero) digits is 3675, while the sum is 28.

The square root of 55731700 is about 7465.3667023128. The cubic root of 55731700 is about 381.9742588395.

The spelling of 55731700 in words is "fifty-five million, seven hundred thirty-one thousand, seven hundred".