997203501 has 24 divisors (see below), whose sum is σ = 1689122240. Its totient is φ = 569582496.

The previous prime is 997203469. The next prime is 997203503. The reversal of 997203501 is 105302799.

It is not a de Polignac number, because 997203501 - 2⁵ = 997203469 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 (997203503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 432985 + ... + 435281.

Almost surely, 2^997203501 is an apocalyptic number.

It is an amenable number.

997203501 is a deficient number, since it is larger than the sum of its proper divisors (691918739).

997203501 is an frugal number, since it uses more digits than its factorization.

997203501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4610 (or 2307 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 997203501 is about 31578.5291139407. The cubic root of 997203501 is about 999.0669633801.

The spelling of 997203501 in words is "nine hundred ninety-seven million, two hundred three thousand, five hundred one".