5651412021 has 12 divisors (see below), whose sum is σ = 8166201472. Its totient is φ = 3766199976.

The previous prime is 5651411999. The next prime is 5651412029. The reversal of 5651412021 is 1202141565.

5651412021 is a `hidden beast` number, since 5 + 6 + 514 + 120 + 21 = 666.

It is not a de Polignac number, because 5651412021 - 2¹⁷ = 5651280949 is a prime.

It is a super-2 number, since 2×5651412021² = 63876915662206608882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5651412029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91621 + ... + 140346.

Almost surely, 2^5651412021 is an apocalyptic number.

It is an amenable number.

5651412021 is a deficient number, since it is larger than the sum of its proper divisors (2514789451).

5651412021 is a wasteful number, since it uses less digits than its factorization.

5651412021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234680 (or 234677 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 5651412021 is about 75175.8739290738. The cubic root of 5651412021 is about 1781.2258547567.

Adding to 5651412021 its reverse (1202141565), we get a palindrome (6853553586).

The spelling of 5651412021 in words is "five billion, six hundred fifty-one million, four hundred twelve thousand, twenty-one".