55375420 has 24 divisors (see below), whose sum is σ = 119126448. Its totient is φ = 21609600.

The previous prime is 55375399. The next prime is 55375423. The reversal of 55375420 is 2457355.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55375423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32946 + ... + 34585.

It is an arithmetic number, because the mean of its divisors is an integer number (4963602).

Almost surely, 2^55375420 is an apocalyptic number.

It is an amenable number.

55375420 is an abundant number, since it is smaller than the sum of its proper divisors (63751028).

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

55375420 is a wasteful number, since it uses less digits than its factorization.

55375420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67581 (or 67579 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 55375420 is about 7441.4662533670. The cubic root of 55375420 is about 381.1585601722.

The spelling of 55375420 in words is "fifty-five million, three hundred seventy-five thousand, four hundred twenty".