972141551 has 4 divisors (see below), whose sum is σ = 972241704. Its totient is φ = 972041400.

The previous prime is 972141523. The next prime is 972141553. The reversal of 972141551 is 155141279.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 972141551 - 2⁶ = 972141487 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 (972141553) 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, 33740 + ... + 55521.

It is an arithmetic number, because the mean of its divisors is an integer number (243060426).

Almost surely, 2^972141551 is an apocalyptic number.

972141551 is a deficient number, since it is larger than the sum of its proper divisors (100153).

972141551 is a wasteful number, since it uses less digits than its factorization.

972141551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100152.

The product of its digits is 12600, while the sum is 35.

The square root of 972141551 is about 31179.1845788180. The cubic root of 972141551 is about 990.6262578389.

The spelling of 972141551 in words is "nine hundred seventy-two million, one hundred forty-one thousand, five hundred fifty-one".