997042571 has 32 divisors (see below), whose sum is σ = 1268628480. Its totient is φ = 763462656.

The previous prime is 997042561. The next prime is 997042573. The reversal of 997042571 is 175240799.

It is not a de Polignac number, because 997042571 - 2⁶ = 997042507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (997042573) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 373640 + ... + 376298.

It is an arithmetic number, because the mean of its divisors is an integer number (39644640).

Almost surely, 2^997042571 is an apocalyptic number.

997042571 is a deficient number, since it is larger than the sum of its proper divisors (271585909).

997042571 is a wasteful number, since it uses less digits than its factorization.

997042571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2843.

The product of its (nonzero) digits is 158760, while the sum is 44.

The square root of 997042571 is about 31575.9809190467. The cubic root of 997042571 is about 999.0132169128.

The spelling of 997042571 in words is "nine hundred ninety-seven million, forty-two thousand, five hundred seventy-one".