2521045438 has 8 divisors (see below), whose sum is σ = 3980598120. Its totient is φ = 1194179400.

The previous prime is 2521045411. The next prime is 2521045451. The reversal of 2521045438 is 8345401252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2521045438² = 12711340200921223688, 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 in 3 ways as a sum of consecutive naturals, for example, 33171613 + ... + 33171688.

It is an arithmetic number, because the mean of its divisors is an integer number (497574765).

Almost surely, 2^2521045438 is an apocalyptic number.

2521045438 is a deficient number, since it is larger than the sum of its proper divisors (1459552682).

2521045438 is a wasteful number, since it uses less digits than its factorization.

2521045438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66343322.

The product of its (nonzero) digits is 38400, while the sum is 34.

The square root of 2521045438 is about 50210.0133240373. The cubic root of 2521045438 is about 1361.0065785616.

The spelling of 2521045438 in words is "two billion, five hundred twenty-one million, forty-five thousand, four hundred thirty-eight".