551529139 has 4 divisors (see below), whose sum is σ = 630319024. Its totient is φ = 472739256.

The previous prime is 551529103. The next prime is 551529179. The reversal of 551529139 is 931925155.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551529139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551529179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39394932 + ... + 39394945.

It is an arithmetic number, because the mean of its divisors is an integer number (157579756).

Almost surely, 2^551529139 is an apocalyptic number.

551529139 is a deficient number, since it is larger than the sum of its proper divisors (78789885).

551529139 is an equidigital number, since it uses as much as digits as its factorization.

551529139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78789884.

The product of its digits is 60750, while the sum is 40.

The square root of 551529139 is about 23484.6575235833. The cubic root of 551529139 is about 820.0798747297.

The spelling of 551529139 in words is "five hundred fifty-one million, five hundred twenty-nine thousand, one hundred thirty-nine".