5625491 has 4 divisors (see below), whose sum is σ = 5693352. Its totient is φ = 5557632.

The previous prime is 5625461. The next prime is 5625493. The reversal of 5625491 is 1945265.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5625491 - 2⁶ = 5625427 is a prime.

It is a super-2 number, since 2×5625491² = 63292297982162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5625493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33806 + ... + 33971.

It is an arithmetic number, because the mean of its divisors is an integer number (1423338).

Almost surely, 2^5625491 is an apocalyptic number.

5625491 is a deficient number, since it is larger than the sum of its proper divisors (67861).

5625491 is an equidigital number, since it uses as much as digits as its factorization.

5625491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67860.

The product of its digits is 10800, while the sum is 32.

The square root of 5625491 is about 2371.8117547563. The cubic root of 5625491 is about 177.8498396950.

It can be divided in two parts, 5625 and 491, that added together give a palindrome (6116).

The spelling of 5625491 in words is "five million, six hundred twenty-five thousand, four hundred ninety-one".