1561014455 has 64 divisors (see below), whose sum is σ = 2596478976. Its totient is φ = 869184000.

The previous prime is 1561014401. The next prime is 1561014457. The reversal of 1561014455 is 5544101651.

It is not a de Polignac number, because 1561014455 - 2⁶ = 1561014391 is a prime.

It is a super-2 number, since 2×1561014455² = 4873532257437894050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1561014457) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 150125 + ... + 160185.

It is an arithmetic number, because the mean of its divisors is an integer number (40569984).

Almost surely, 2^1561014455 is an apocalyptic number.

1561014455 is a deficient number, since it is larger than the sum of its proper divisors (1035464521).

1561014455 is a wasteful number, since it uses less digits than its factorization.

1561014455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10128.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 1561014455 is about 39509.6754605755. The cubic root of 1561014455 is about 1160.0293430449.

The spelling of 1561014455 in words is "one billion, five hundred sixty-one million, fourteen thousand, four hundred fifty-five".