5651399 has 16 divisors (see below), whose sum is σ = 6519744. Its totient is φ = 4857600.

The previous prime is 5651389. The next prime is 5651407. The reversal of 5651399 is 9931565.

It is not a de Polignac number, because 5651399 - 2¹⁶ = 5585863 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 (5651309) 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, 12029 + ... + 12489.

It is an arithmetic number, because the mean of its divisors is an integer number (407484).

Almost surely, 2^5651399 is an apocalyptic number.

5651399 is a deficient number, since it is larger than the sum of its proper divisors (868345).

5651399 is a wasteful number, since it uses less digits than its factorization.

5651399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538.

The product of its digits is 36450, while the sum is 38.

The square root of 5651399 is about 2377.2671284481. The cubic root of 5651399 is about 178.1224486759.

The spelling of 5651399 in words is "five million, six hundred fifty-one thousand, three hundred ninety-nine".