5561662401 has 12 divisors (see below), whose sum is σ = 8047205712. Its totient is φ = 3701454936.

The previous prime is 5561662391. The next prime is 5561662411. The reversal of 5561662401 is 1042661655.

5561662401 is a `hidden beast` number, since 556 + 1 + 6 + 62 + 40 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (5561662391) and next prime (5561662411).

It is not a de Polignac number, because 5561662401 - 2¹⁷ = 5561531329 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5561662411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 521091 + ... + 531656.

It is an arithmetic number, because the mean of its divisors is an integer number (670600476).

Almost surely, 2^5561662401 is an apocalyptic number.

It is an amenable number.

5561662401 is a deficient number, since it is larger than the sum of its proper divisors (2485543311).

5561662401 is a wasteful number, since it uses less digits than its factorization.

5561662401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053340 (or 1053337 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 5561662401 is about 74576.5539630251. The cubic root of 5561662401 is about 1771.7463268317.

The spelling of 5561662401 in words is "five billion, five hundred sixty-one million, six hundred sixty-two thousand, four hundred one".