55772046 has 72 divisors (see below), whose sum is σ = 137559240. Its totient is φ = 16299360.

The previous prime is 55772027. The next prime is 55772063. The reversal of 55772046 is 64027755.

It is a super-2 number, since 2×55772046² = 6221042230052232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55772046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 62721 + ... + 63603.

It is an arithmetic number, because the mean of its divisors is an integer number (1910545).

Almost surely, 2^55772046 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55772046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68779620).

55772046 is an abundant number, since it is smaller than the sum of its proper divisors (81787194).

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

55772046 is a wasteful number, since it uses less digits than its factorization.

55772046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942 (or 928 counting only the distinct ones).

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

The square root of 55772046 is about 7468.0684249677. The cubic root of 55772046 is about 382.0664111577.

The spelling of 55772046 in words is "fifty-five million, seven hundred seventy-two thousand, forty-six".