971274551 has 4 divisors (see below), whose sum is σ = 1045987992. Its totient is φ = 896561112.

The previous prime is 971274541. The next prime is 971274553. The reversal of 971274551 is 155472179.

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 971274551 - 2⁶ = 971274487 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 971274499 and 971274508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971274553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37356701 + ... + 37356726.

It is an arithmetic number, because the mean of its divisors is an integer number (261496998).

Almost surely, 2^971274551 is an apocalyptic number.

971274551 is a deficient number, since it is larger than the sum of its proper divisors (74713441).

971274551 is a wasteful number, since it uses less digits than its factorization.

971274551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74713440.

The product of its digits is 88200, while the sum is 41.

The square root of 971274551 is about 31165.2779708444. The cubic root of 971274551 is about 990.3316750803.

The spelling of 971274551 in words is "nine hundred seventy-one million, two hundred seventy-four thousand, five hundred fifty-one".