55438570 has 24 divisors (see below), whose sum is σ = 109688292. Its totient is φ = 20159040.

The previous prime is 55438553. The next prime is 55438577. The reversal of 55438570 is 7583455.

It can be written as a sum of positive squares in 2 ways, for example, as 54154881 + 1283689 = 7359^2 + 1133^2 .

It is not an unprimeable number, because it can be changed into a prime (55438577) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21699 + ... + 24118.

Almost surely, 2^55438570 is an apocalyptic number.

55438570 is a deficient number, since it is larger than the sum of its proper divisors (54249722).

55438570 is a wasteful number, since it uses less digits than its factorization.

55438570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45846 (or 45835 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 37.

The square root of 55438570 is about 7445.7081597387. The cubic root of 55438570 is about 381.3033959075.

It can be divided in two parts, 554385 and 70, that added together give a palindrome (554455).

The spelling of 55438570 in words is "fifty-five million, four hundred thirty-eight thousand, five hundred seventy".