561420454 has 32 divisors (see below), whose sum is σ = 1011988800. Its totient is φ = 228493440.

The previous prime is 561420437. The next prime is 561420463. The reversal of 561420454 is 454024165.

It is a happy number.

It is a super-2 number, since 2×561420454² = 630385852339132232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13432 + ... + 36100.

It is an arithmetic number, because the mean of its divisors is an integer number (31624650).

Almost surely, 2^561420454 is an apocalyptic number.

561420454 is a deficient number, since it is larger than the sum of its proper divisors (450568346).

561420454 is a wasteful number, since it uses less digits than its factorization.

561420454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22768.

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 561420454 is about 23694.3126931338. The cubic root of 561420454 is about 824.9533877552.

The spelling of 561420454 in words is "five hundred sixty-one million, four hundred twenty thousand, four hundred fifty-four".