2521402477 has 16 divisors (see below), whose sum is σ = 2869030080. Its totient is φ = 2213109360.

The previous prime is 2521402459. The next prime is 2521402493. The reversal of 2521402477 is 7742041252.

It is not a de Polignac number, because 2521402477 - 2¹⁵ = 2521369709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521472477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5938 + ... + 71260.

It is an arithmetic number, because the mean of its divisors is an integer number (179314380).

Almost surely, 2^2521402477 is an apocalyptic number.

It is an amenable number.

2521402477 is a deficient number, since it is larger than the sum of its proper divisors (347627603).

2521402477 is an equidigital number, since it uses as much as digits as its factorization.

2521402477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65385 (or 65363 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 34.

The square root of 2521402477 is about 50213.5686542990. The cubic root of 2521402477 is about 1361.0708256503.

The spelling of 2521402477 in words is "two billion, five hundred twenty-one million, four hundred two thousand, four hundred seventy-seven".