972825551 has 2 divisors, whose sum is σ = 972825552. Its totient is φ = 972825550.

The previous prime is 972825481. The next prime is 972825563. The reversal of 972825551 is 155528279.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 972825551 - 2¹⁰ = 972824527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (972822551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486412775 + 486412776.

It is an arithmetic number, because the mean of its divisors is an integer number (486412776).

Almost surely, 2^972825551 is an apocalyptic number.

972825551 is a deficient number, since it is larger than the sum of its proper divisors (1).

972825551 is an equidigital number, since it uses as much as digits as its factorization.

972825551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252000, while the sum is 44.

The square root of 972825551 is about 31190.1515065253. The cubic root of 972825551 is about 990.8585386573.

The spelling of 972825551 in words is "nine hundred seventy-two million, eight hundred twenty-five thousand, five hundred fifty-one".