2402251621 has 8 divisors (see below), whose sum is σ = 2995015104. Its totient is φ = 1871884320.

The previous prime is 2402251613. The next prime is 2402251633. The reversal of 2402251621 is 1261522042.

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

It is a cyclic number.

It is not a de Polignac number, because 2402251621 - 2³ = 2402251613 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 (2402252621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15598960 + ... + 15599113.

It is an arithmetic number, because the mean of its divisors is an integer number (374376888).

Almost surely, 2^2402251621 is an apocalyptic number.

It is an amenable number.

2402251621 is a deficient number, since it is larger than the sum of its proper divisors (592763483).

2402251621 is a wasteful number, since it uses less digits than its factorization.

2402251621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31198091.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 2402251621 is about 49012.7699788535. The cubic root of 2402251621 is about 1339.2844663200.

Adding to 2402251621 its reverse (1261522042), we get a palindrome (3663773663).

The spelling of 2402251621 in words is "two billion, four hundred two million, two hundred fifty-one thousand, six hundred twenty-one".