55051438 has 32 divisors (see below), whose sum is σ = 93294432. Its totient is φ = 24192000.

The previous prime is 55051433. The next prime is 55051439. The reversal of 55051438 is 83415055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55051433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45238 + ... + 46438.

It is an arithmetic number, because the mean of its divisors is an integer number (2915451).

Almost surely, 2^55051438 is an apocalyptic number.

55051438 is a deficient number, since it is larger than the sum of its proper divisors (38242994).

55051438 is a wasteful number, since it uses less digits than its factorization.

55051438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 55051438 is about 7419.6656258891. The cubic root of 55051438 is about 380.4137644506.

The spelling of 55051438 in words is "fifty-five million, fifty-one thousand, four hundred thirty-eight".