55713420 has 240 divisors, whose sum is σ = 212224320. Its totient is φ = 11985408.

The previous prime is 55713419. The next prime is 55713431. The reversal of 55713420 is 2431755.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3277252 + ... + 3277268.

It is an arithmetic number, because the mean of its divisors is an integer number (884268).

Almost surely, 2^55713420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55713420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106112160).

55713420 is an abundant number, since it is smaller than the sum of its proper divisors (156510900).

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

55713420 is a wasteful number, since it uses less digits than its factorization.

55713420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 34 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 55713420 is about 7464.1422816021. The cubic root of 55713420 is about 381.9324917481.

The spelling of 55713420 in words is "fifty-five million, seven hundred thirteen thousand, four hundred twenty".