7272551 has 8 divisors (see below), whose sum is σ = 8544144. Its totient is φ = 6102720.

The previous prime is 7272527. The next prime is 7272557. The reversal of 7272551 is 1552727.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-7272551 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 (7272557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25286 + ... + 25571.

It is an arithmetic number, because the mean of its divisors is an integer number (1068018).

Almost surely, 2^7272551 is an apocalyptic number.

7272551 is a deficient number, since it is larger than the sum of its proper divisors (1271593).

7272551 is a wasteful number, since it uses less digits than its factorization.

7272551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50881.

The product of its digits is 4900, while the sum is 29.

The square root of 7272551 is about 2696.7667678166. The cubic root of 7272551 is about 193.7442959125.

The spelling of 7272551 in words is "seven million, two hundred seventy-two thousand, five hundred fifty-one".