5551111051 has 4 divisors (see below), whose sum is σ = 5553210832. Its totient is φ = 5549011272.

The previous prime is 5551111043. The next prime is 5551111057. The reversal of 5551111051 is 1501111555.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5551111051 - 2³ = 5551111043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5551111057) 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, 1045920 + ... + 1051213.

It is an arithmetic number, because the mean of its divisors is an integer number (1388302708).

Almost surely, 2^5551111051 is an apocalyptic number.

5551111051 is a deficient number, since it is larger than the sum of its proper divisors (2099781).

5551111051 is a wasteful number, since it uses less digits than its factorization.

5551111051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2099780.

The product of its (nonzero) digits is 625, while the sum is 25.

The square root of 5551111051 is about 74505.7786416597. The cubic root of 5551111051 is about 1770.6251902150.

The spelling of 5551111051 in words is "five billion, five hundred fifty-one million, one hundred eleven thousand, fifty-one".