561050031 has 16 divisors (see below), whose sum is σ = 833760000. Its totient is φ = 333502848.

The previous prime is 561050029. The next prime is 561050033. The reversal of 561050031 is 130050165.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (561050029) and next prime (561050033).

It is not a de Polignac number, because 561050031 - 2¹ = 561050029 is a prime.

It is a super-2 number, since 2×561050031² = 629554274570201922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561050033) 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, 288531 + ... + 290468.

It is an arithmetic number, because the mean of its divisors is an integer number (52110000).

Almost surely, 2^561050031 is an apocalyptic number.

561050031 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

561050031 is a deficient number, since it is larger than the sum of its proper divisors (272709969).

561050031 is a wasteful number, since it uses less digits than its factorization.

561050031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579038.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 561050031 is about 23686.4946963454. The cubic root of 561050031 is about 824.7719141743.

The spelling of 561050031 in words is "five hundred sixty-one million, fifty thousand, thirty-one".