55771296 has 96 divisors (see below), whose sum is σ = 168739200. Its totient is φ = 15799296.

The previous prime is 55771273. The next prime is 55771337. The reversal of 55771296 is 69217755.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×55771296² = 6220874915039232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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, 99850 + ... + 100406.

It is an arithmetic number, because the mean of its divisors is an integer number (1757700).

Almost surely, 2^55771296 is an apocalyptic number.

55771296 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 55771296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84369600).

55771296 is an abundant number, since it is smaller than the sum of its proper divisors (112967904).

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

55771296 is a wasteful number, since it uses less digits than its factorization.

55771296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726 (or 718 counting only the distinct ones).

The product of its digits is 132300, while the sum is 42.

The square root of 55771296 is about 7468.0182110115. The cubic root of 55771296 is about 382.0646985250.

The spelling of 55771296 in words is "fifty-five million, seven hundred seventy-one thousand, two hundred ninety-six".