55013642 has 8 divisors (see below), whose sum is σ = 82582500. Its totient is φ = 27486144.

The previous prime is 55013617. The next prime is 55013653. The reversal of 55013642 is 24631055.

It can be written as a sum of positive squares in 2 ways, for example, as 54449641 + 564001 = 7379^2 + 751^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×55013642² = 6053001612208328, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6767 + ... + 12482.

Almost surely, 2^55013642 is an apocalyptic number.

55013642 is a deficient number, since it is larger than the sum of its proper divisors (27568858).

55013642 is a wasteful number, since it uses less digits than its factorization.

55013642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20680.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 55013642 is about 7417.1181735227. The cubic root of 55013642 is about 380.3266858269.

Adding to 55013642 its reverse (24631055), we get a palindrome (79644697).

It can be divided in two parts, 55013 and 642, that added together give a palindrome (55655).

The spelling of 55013642 in words is "fifty-five million, thirteen thousand, six hundred forty-two".