2401145581 has 2 divisors, whose sum is σ = 2401145582. Its totient is φ = 2401145580.

The previous prime is 2401145563. The next prime is 2401145633. The reversal of 2401145581 is 1855411042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2306880900 + 94264681 = 48030^2 + 9709^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2401145581 is a prime.

It is a super-2 number, since 2×2401145581² = 11531000202311655122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2401145561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1200572790 + 1200572791.

It is an arithmetic number, because the mean of its divisors is an integer number (1200572791).

Almost surely, 2^2401145581 is an apocalyptic number.

It is an amenable number.

2401145581 is a deficient number, since it is larger than the sum of its proper divisors (1).

2401145581 is an equidigital number, since it uses as much as digits as its factorization.

2401145581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6400, while the sum is 31.

The square root of 2401145581 is about 49001.4854978908. The cubic root of 2401145581 is about 1339.0788911871.

The spelling of 2401145581 in words is "two billion, four hundred one million, one hundred forty-five thousand, five hundred eighty-one".