553078307561 has 32 divisors (see below), whose sum is σ = 618111188352. Its totient is φ = 491717237760.

The previous prime is 553078307549. The next prime is 553078307641. The reversal of 553078307561 is 165703870355.

It is a cyclic number.

It is not a de Polignac number, because 553078307561 - 2²² = 553074113257 is a prime.

It is a super-2 number, since 2×553078307561² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (553078307501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7400366 + ... + 7474728.

It is an arithmetic number, because the mean of its divisors is an integer number (19315974636).

Almost surely, 2^553078307561 is an apocalyptic number.

It is an amenable number.

553078307561 is a deficient number, since it is larger than the sum of its proper divisors (65032880791).

553078307561 is a wasteful number, since it uses less digits than its factorization.

553078307561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74633.

The product of its (nonzero) digits is 2646000, while the sum is 50.

The spelling of 553078307561 in words is "five hundred fifty-three billion, seventy-eight million, three hundred seven thousand, five hundred sixty-one".