997251524 has 12 divisors (see below), whose sum is σ = 1801486848. Its totient is φ = 482541000.

The previous prime is 997251473. The next prime is 997251527. The reversal of 997251524 is 425152799.

It is not an unprimeable number, because it can be changed into a prime (997251527) 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, 4021052 + ... + 4021299.

It is an arithmetic number, because the mean of its divisors is an integer number (150123904).

Almost surely, 2^997251524 is an apocalyptic number.

It is an amenable number.

997251524 is a deficient number, since it is larger than the sum of its proper divisors (804235324).

997251524 is a wasteful number, since it uses less digits than its factorization.

997251524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8042386 (or 8042384 counting only the distinct ones).

The product of its digits is 226800, while the sum is 44.

The square root of 997251524 is about 31579.2894790241. The cubic root of 997251524 is about 999.0830007027.

The spelling of 997251524 in words is "nine hundred ninety-seven million, two hundred fifty-one thousand, five hundred twenty-four".