2521213454 has 4 divisors (see below), whose sum is σ = 3781820184. Its totient is φ = 1260606726.

The previous prime is 2521213439. The next prime is 2521213511. The reversal of 2521213454 is 4543121252.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×2521213454² = 12713034561261220232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630303362 + ... + 630303365.

It is an arithmetic number, because the mean of its divisors is an integer number (945455046).

Almost surely, 2^2521213454 is an apocalyptic number.

2521213454 is a deficient number, since it is larger than the sum of its proper divisors (1260606730).

2521213454 is a wasteful number, since it uses less digits than its factorization.

2521213454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260606729.

The product of its digits is 9600, while the sum is 29.

The square root of 2521213454 is about 50211.6864285596. The cubic root of 2521213454 is about 1361.0368128179.

The spelling of 2521213454 in words is "two billion, five hundred twenty-one million, two hundred thirteen thousand, four hundred fifty-four".