551742536 has 16 divisors (see below), whose sum is σ = 1034826540. Its totient is φ = 275788800.

The previous prime is 551742509. The next prime is 551742551. The reversal of 551742536 is 635247155.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 466992100 + 84750436 = 21610^2 + 9206^2 .

It is a super-2 number, since 2×551742536² = 608839652063422592, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 551742536.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25400 + ... + 41816.

Almost surely, 2^551742536 is an apocalyptic number.

It is an amenable number.

551742536 is a deficient number, since it is larger than the sum of its proper divisors (483084004).

551742536 is a wasteful number, since it uses less digits than its factorization.

551742536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20624 (or 20620 counting only the distinct ones).

The product of its digits is 126000, while the sum is 38.

The square root of 551742536 is about 23489.2004121043. The cubic root of 551742536 is about 820.1856292021.

The spelling of 551742536 in words is "five hundred fifty-one million, seven hundred forty-two thousand, five hundred thirty-six".