551699913 has 4 divisors (see below), whose sum is σ = 735599888. Its totient is φ = 367799940.

The previous prime is 551699893. The next prime is 551699917. The reversal of 551699913 is 319996155.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 551699913 - 2¹² = 551695817 is a prime.

It is a super-5 number, since 5×551699913⁵ (a number of 45 digits) contains 55555 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (551699917) 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, 91949983 + ... + 91949988.

It is an arithmetic number, because the mean of its divisors is an integer number (183899972).

Almost surely, 2^551699913 is an apocalyptic number.

It is an amenable number.

551699913 is a deficient number, since it is larger than the sum of its proper divisors (183899975).

551699913 is a wasteful number, since it uses less digits than its factorization.

551699913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183899974.

The product of its digits is 328050, while the sum is 48.

The square root of 551699913 is about 23488.2931052897. The cubic root of 551699913 is about 820.1645084377.

The spelling of 551699913 in words is "five hundred fifty-one million, six hundred ninety-nine thousand, nine hundred thirteen".