5581493501 has 2 divisors, whose sum is σ = 5581493502. Its totient is φ = 5581493500.

The previous prime is 5581493453. The next prime is 5581493581. The reversal of 5581493501 is 1053941855.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3736876900 + 1844616601 = 61130^2 + 42949^2 .

It is a cyclic number.

It is not a de Polignac number, because 5581493501 - 2²⁶ = 5514384637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5581493581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2790746750 + 2790746751.

It is an arithmetic number, because the mean of its divisors is an integer number (2790746751).

Almost surely, 2^5581493501 is an apocalyptic number.

It is an amenable number.

5581493501 is a deficient number, since it is larger than the sum of its proper divisors (1).

5581493501 is an equidigital number, since it uses as much as digits as its factorization.

5581493501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108000, while the sum is 41.

The square root of 5581493501 is about 74709.3936596998. The cubic root of 5581493501 is about 1773.8496548020.

The spelling of 5581493501 in words is "five billion, five hundred eighty-one million, four hundred ninety-three thousand, five hundred one".