551911137 has 16 divisors (see below), whose sum is σ = 781140672. Its totient is φ = 345420800.

The previous prime is 551911133. The next prime is 551911147. The reversal of 551911137 is 731119155.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 551911137 - 2² = 551911133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 551911098 and 551911107.

It is not an unprimeable number, because it can be changed into a prime (551911133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6958 + ... + 33944.

It is an arithmetic number, because the mean of its divisors is an integer number (48821292).

Almost surely, 2^551911137 is an apocalyptic number.

It is an amenable number.

551911137 is a deficient number, since it is larger than the sum of its proper divisors (229229535).

551911137 is a wasteful number, since it uses less digits than its factorization.

551911137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27408.

The product of its digits is 4725, while the sum is 33.

The square root of 551911137 is about 23492.7890425977. The cubic root of 551911137 is about 820.2691645621.

The spelling of 551911137 in words is "five hundred fifty-one million, nine hundred eleven thousand, one hundred thirty-seven".