55015156551 has 8 divisors (see below), whose sum is σ = 75336070384. Its totient is φ = 35685506880.

The previous prime is 55015156541. The next prime is 55015156571. The reversal of 55015156551 is 15565151055.

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

It is not a de Polignac number, because 55015156551 - 2²³ = 55006767943 is a prime.

It is a super-3 number, since 3×55015156551³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55015156541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247815910 + ... + 247816131.

It is an arithmetic number, because the mean of its divisors is an integer number (9417008798).

Almost surely, 2^55015156551 is an apocalyptic number.

55015156551 is a deficient number, since it is larger than the sum of its proper divisors (20320913833).

55015156551 is a wasteful number, since it uses less digits than its factorization.

55015156551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495632081.

The product of its (nonzero) digits is 93750, while the sum is 39.

The spelling of 55015156551 in words is "fifty-five billion, fifteen million, one hundred fifty-six thousand, five hundred fifty-one".