1561014454 has 4 divisors (see below), whose sum is σ = 2341521684. Its totient is φ = 780507226.

The previous prime is 1561014401. The next prime is 1561014457. The reversal of 1561014454 is 4544101651.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1561014454² = 4873532251193836232, 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 as a sum of consecutive naturals, namely, 390253612 + ... + 390253615.

It is an arithmetic number, because the mean of its divisors is an integer number (585380421).

Almost surely, 2^1561014454 is an apocalyptic number.

1561014454 is a deficient number, since it is larger than the sum of its proper divisors (780507230).

1561014454 is an equidigital number, since it uses as much as digits as its factorization.

1561014454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780507229.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 1561014454 is about 39509.6754479203. The cubic root of 1561014454 is about 1160.0293427972.

The spelling of 1561014454 in words is "one billion, five hundred sixty-one million, fourteen thousand, four hundred fifty-four".