55613011 has 8 divisors (see below), whose sum is σ = 58404384. Its totient is φ = 52852800.

The previous prime is 55613009. The next prime is 55613021. The reversal of 55613011 is 11031655.

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

It is a cyclic number.

It is not a de Polignac number, because 55613011 - 2¹ = 55613009 is a prime.

It is a super-2 number, since 2×55613011² = 6185613984972242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55613021) 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, 4090 + ... + 11311.

It is an arithmetic number, because the mean of its divisors is an integer number (7300548).

Almost surely, 2^55613011 is an apocalyptic number.

55613011 is a deficient number, since it is larger than the sum of its proper divisors (2791373).

55613011 is a wasteful number, since it uses less digits than its factorization.

55613011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15581.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 55613011 is about 7457.4131573891. The cubic root of 55613011 is about 381.7029089954.

Adding to 55613011 its reverse (11031655), we get a palindrome (66644666).

The spelling of 55613011 in words is "fifty-five million, six hundred thirteen thousand, eleven".