55919370 has 64 divisors (see below), whose sum is σ = 145797120. Its totient is φ = 13644288.

The previous prime is 55919363. The next prime is 55919401. The reversal of 55919370 is 7391955.

55919370 = 2068² + 2069² + ... + 2080².

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 48966 + ... + 50094.

It is an arithmetic number, because the mean of its divisors is an integer number (2278080).

Almost surely, 2^55919370 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55919370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72898560).

55919370 is an abundant number, since it is smaller than the sum of its proper divisors (89877750).

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

55919370 is a wasteful number, since it uses less digits than its factorization.

55919370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279.

The product of its (nonzero) digits is 42525, while the sum is 39.

The square root of 55919370 is about 7477.9255144726. The cubic root of 55919370 is about 382.4025297374.

The spelling of 55919370 in words is "fifty-five million, nine hundred nineteen thousand, three hundred seventy".