997051 has 4 divisors (see below), whose sum is σ = 1087704. Its totient is φ = 906400.

The previous prime is 997043. The next prime is 997057. The reversal of 997051 is 150799.

997051 = T₂₉₀ + T₂₉₁ + ... + T₃₁₁.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150799 = 11 ⋅13709.

It is not a de Polignac number, because 997051 - 2³ = 997043 is a prime.

It is a super-2 number, since 2×997051² = 1988221393202, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (997057) 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, 45310 + ... + 45331.

It is an arithmetic number, because the mean of its divisors is an integer number (271926).

2⁹⁹⁷⁰⁵¹ is an apocalyptic number.

997051 is a deficient number, since it is larger than the sum of its proper divisors (90653).

997051 is a wasteful number, since it uses less digits than its factorization.

997051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90652.

The product of its (nonzero) digits is 2835, while the sum is 31.

The square root of 997051 is about 998.5244113190. The cubic root of 997051 is about 99.9016032125.

The spelling of 997051 in words is "nine hundred ninety-seven thousand, fifty-one".