55120052499 has 8 divisors (see below), whose sum is σ = 73577207760. Its totient is φ = 36704799456.

The previous prime is 55120052489. The next prime is 55120052501. The reversal of 55120052499 is 99425002155.

It is a happy number.

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

It is not a de Polignac number, because 55120052499 - 2¹⁷ = 55119921427 is a prime.

It is a super-2 number, since 2×55120052499² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55120052499.

It is not an unprimeable number, because it can be changed into a prime (55120052419) 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, 10472484 + ... + 10477745.

It is an arithmetic number, because the mean of its divisors is an integer number (9197150970).

Almost surely, 2^55120052499 is an apocalyptic number.

55120052499 is a deficient number, since it is larger than the sum of its proper divisors (18457155261).

55120052499 is a wasteful number, since it uses less digits than its factorization.

55120052499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20951109.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 55120052499 in words is "fifty-five billion, one hundred twenty million, fifty-two thousand, four hundred ninety-nine".