55515061051 has 4 divisors (see below), whose sum is σ = 57305869504. Its totient is φ = 53724252600.

The previous prime is 55515060977. The next prime is 55515061117. The reversal of 55515061051 is 15016051555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15016051555 = 5 ⋅3003210311.

It is a cyclic number.

It is not a de Polignac number, because 55515061051 - 2⁹ = 55515060539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55515060998 and 55515061016.

It is not an unprimeable number, because it can be changed into a prime (55515061351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 895404180 + ... + 895404241.

It is an arithmetic number, because the mean of its divisors is an integer number (14326467376).

Almost surely, 2^55515061051 is an apocalyptic number.

55515061051 is a deficient number, since it is larger than the sum of its proper divisors (1790808453).

55515061051 is a wasteful number, since it uses less digits than its factorization.

55515061051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1790808452.

The product of its (nonzero) digits is 18750, while the sum is 34.

The spelling of 55515061051 in words is "fifty-five billion, five hundred fifteen million, sixty-one thousand, fifty-one".