8972551 has 8 divisors (see below), whose sum is σ = 10422944. Its totient is φ = 7564320.

The previous prime is 8972501. The next prime is 8972567. The reversal of 8972551 is 1552798.

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

It is a cyclic number.

It is not a de Polignac number, because 8972551 - 2¹¹ = 8970503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8972551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8972501) 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, 10080 + ... + 10933.

It is an arithmetic number, because the mean of its divisors is an integer number (1302868).

Almost surely, 2^8972551 is an apocalyptic number.

8972551 is a deficient number, since it is larger than the sum of its proper divisors (1450393).

8972551 is a wasteful number, since it uses less digits than its factorization.

8972551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21081.

The product of its digits is 25200, while the sum is 37.

The square root of 8972551 is about 2995.4216731539. The cubic root of 8972551 is about 207.7966994714.

The spelling of 8972551 in words is "eight million, nine hundred seventy-two thousand, five hundred fifty-one".