55601138 has 8 divisors (see below), whose sum is σ = 83961900. Its totient is φ = 27613840.

The previous prime is 55601131. The next prime is 55601167. The reversal of 55601138 is 83110655.

It can be written as a sum of positive squares in 2 ways, for example, as 55249489 + 351649 = 7433^2 + 593^2 .

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55601138.

It is not an unprimeable number, because it can be changed into a prime (55601131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92993 + ... + 93588.

Almost surely, 2^55601138 is an apocalyptic number.

55601138 is a deficient number, since it is larger than the sum of its proper divisors (28360762).

55601138 is a wasteful number, since it uses less digits than its factorization.

55601138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186732.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 55601138 is about 7456.6170613758. The cubic root of 55601138 is about 381.6757434029.

The spelling of 55601138 in words is "fifty-five million, six hundred one thousand, one hundred thirty-eight".