55726704 has 120 divisors (see below), whose sum is σ = 176572032. Its totient is φ = 16873920.

The previous prime is 55726703. The next prime is 55726709. The reversal of 55726704 is 40762755.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55726703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42117 + ... + 43419.

Almost surely, 2^55726704 is an apocalyptic number.

55726704 is a gapful number since it is divisible by the number (54) 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 55726704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88286016).

55726704 is an abundant number, since it is smaller than the sum of its proper divisors (120845328).

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

55726704 is a wasteful number, since it uses less digits than its factorization.

55726704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337 (or 1319 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 55726704 is about 7465.0320829853. The cubic root of 55726704 is about 381.9628446268.

It can be divided in two parts, 557 and 26704, that added together give a triangular number (27261 = T₂₃₃).

The spelling of 55726704 in words is "fifty-five million, seven hundred twenty-six thousand, seven hundred four".