1561530053 has 8 divisors (see below), whose sum is σ = 1725271488. Its totient is φ = 1405776064.

The previous prime is 1561530041. The next prime is 1561530119. The reversal of 1561530053 is 3500351651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1561530053 - 2⁶ = 1561529989 is a prime.

It is a super-2 number, since 2×1561530053² = 4876752212844365618, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1561529998 and 1561530025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1561530013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1996451 + ... + 1997232.

It is an arithmetic number, because the mean of its divisors is an integer number (215658936).

Almost surely, 2^1561530053 is an apocalyptic number.

It is an amenable number.

1561530053 is a deficient number, since it is larger than the sum of its proper divisors (163741435).

1561530053 is a wasteful number, since it uses less digits than its factorization.

1561530053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3993723.

The product of its (nonzero) digits is 6750, while the sum is 29.

The square root of 1561530053 is about 39516.1998805553. The cubic root of 1561530053 is about 1160.1570469595.

The spelling of 1561530053 in words is "one billion, five hundred sixty-one million, five hundred thirty thousand, fifty-three".