550561507 has 16 divisors (see below), whose sum is σ = 595900800. Its totient is φ = 506787840.

The previous prime is 550561483. The next prime is 550561513. The reversal of 550561507 is 705165055.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550561507 is a prime.

It is a super-2 number, since 2×550561507² = 606235945980222098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550561567) 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, 144507 + ... + 148267.

It is an arithmetic number, because the mean of its divisors is an integer number (37243800).

Almost surely, 2^550561507 is an apocalyptic number.

550561507 is a deficient number, since it is larger than the sum of its proper divisors (45339293).

550561507 is a wasteful number, since it uses less digits than its factorization.

550561507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3966.

The product of its (nonzero) digits is 26250, while the sum is 34.

The square root of 550561507 is about 23464.0471146816. The cubic root of 550561507 is about 819.5999967567.

The spelling of 550561507 in words is "five hundred fifty million, five hundred sixty-one thousand, five hundred seven".