7452621 has 32 divisors (see below), whose sum is σ = 12579840. Its totient is φ = 4316400.

The previous prime is 7452619. The next prime is 7452659. The reversal of 7452621 is 1262547.

It is not a de Polignac number, because 7452621 - 2¹ = 7452619 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 7⁸ + 4 + 5 + 2 + 6⁸ + 2¹³ + 1 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7452691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6286 + ... + 7376.

It is an arithmetic number, because the mean of its divisors is an integer number (393120).

Almost surely, 2^7452621 is an apocalyptic number.

It is an amenable number.

7452621 is a deficient number, since it is larger than the sum of its proper divisors (5127219).

7452621 is a wasteful number, since it uses less digits than its factorization.

7452621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134 (or 1128 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 7452621 is about 2729.9489006207. The cubic root of 7452621 is about 195.3303276868.

It can be divided in two parts, 74526 and 21, that added together give a palindrome (74547).

The spelling of 7452621 in words is "seven million, four hundred fifty-two thousand, six hundred twenty-one".