55313551 has 8 divisors (see below), whose sum is σ = 59127264. Its totient is φ = 51617280.

The previous prime is 55313537. The next prime is 55313567. The reversal of 55313551 is 15531355.

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 55313551 - 2¹³ = 55305359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55313581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28386 + ... + 30271.

It is an arithmetic number, because the mean of its divisors is an integer number (7390908).

Almost surely, 2^55313551 is an apocalyptic number.

55313551 is a deficient number, since it is larger than the sum of its proper divisors (3813713).

55313551 is a wasteful number, since it uses less digits than its factorization.

55313551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58721.

The product of its digits is 5625, while the sum is 28.

The square root of 55313551 is about 7437.3080479432. The cubic root of 55313551 is about 381.0165556100.

The spelling of 55313551 in words is "fifty-five million, three hundred thirteen thousand, five hundred fifty-one".