1561125052 has 12 divisors (see below), whose sum is σ = 2733877440. Its totient is φ = 780017216.

The previous prime is 1561125043. The next prime is 1561125107. The reversal of 1561125052 is 2505211651.

It is a super-2 number, since 2×1561125052² = 4874222855964005408, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1561125052.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129853 + ... + 141364.

It is an arithmetic number, because the mean of its divisors is an integer number (227823120).

Almost surely, 2^1561125052 is an apocalyptic number.

It is an amenable number.

1561125052 is a deficient number, since it is larger than the sum of its proper divisors (1172752388).

1561125052 is a wasteful number, since it uses less digits than its factorization.

1561125052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272660 (or 272658 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 1561125052 is about 39511.0750549767. The cubic root of 1561125052 is about 1160.0567382077.

The spelling of 1561125052 in words is "one billion, five hundred sixty-one million, one hundred twenty-five thousand, fifty-two".