55601331 has 8 divisors (see below), whose sum is σ = 74288064. Its totient is φ = 36991080.

The previous prime is 55601309. The next prime is 55601347. The reversal of 55601331 is 13310655.

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

It is not a de Polignac number, because 55601331 - 2⁶ = 55601267 is a prime.

It is a super-2 number, since 2×55601331² = 6183016017943122, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 17401 + ... + 20346.

It is an arithmetic number, because the mean of its divisors is an integer number (9286008).

Almost surely, 2^55601331 is an apocalyptic number.

55601331 is a deficient number, since it is larger than the sum of its proper divisors (18686733).

55601331 is a wasteful number, since it uses less digits than its factorization.

55601331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38241.

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 55601331 is about 7456.6300028900. The cubic root of 55601331 is about 381.6761850206.

Adding to 55601331 its reverse (13310655), we get a palindrome (68911986).

The spelling of 55601331 in words is "fifty-five million, six hundred one thousand, three hundred thirty-one".