5651388 has 36 divisors (see below), whose sum is σ = 14381640. Its totient is φ = 1871136.

The previous prime is 5651377. The next prime is 5651389. The reversal of 5651388 is 8831565.

5651388 is a `hidden beast` number, since 565 + 13 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5651389) 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, 6006 + ... + 6882.

It is an arithmetic number, because the mean of its divisors is an integer number (399490).

Almost surely, 2^5651388 is an apocalyptic number.

It is an amenable number.

5651388 is an abundant number, since it is smaller than the sum of its proper divisors (8730252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5651388 is a wasteful number, since it uses less digits than its factorization.

5651388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066 (or 1061 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 5651388 is about 2377.2648148660. The cubic root of 5651388 is about 178.1223331087.

It can be divided in two parts, 565 and 1388, that added together give a triangular number (1953 = T₆₂).

The spelling of 5651388 in words is "five million, six hundred fifty-one thousand, three hundred eighty-eight".