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252997 = 431587
BaseRepresentation
bin111101110001000101
3110212001021
4331301011
531043442
65231141
72102413
oct756105
9425037
10252997
11163098
121024b1
138b204
14682b3
154ee67
hex3dc45

252997 has 4 divisors (see below), whose sum is σ = 254016. Its totient is φ = 251980.

The previous prime is 252983. The next prime is 253003. The reversal of 252997 is 799252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 252997 - 27 = 252869 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 (252937) 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, 138 + ... + 724.

It is an arithmetic number, because the mean of its divisors is an integer number (63504).

252997 is a Friedman number, since it can be written as (2^9-9)^2-7-5, using all its digits and the basic arithmetic operations.

2252997 is an apocalyptic number.

It is an amenable number.

252997 is a deficient number, since it is larger than the sum of its proper divisors (1019).

252997 is an equidigital number, since it uses as much as digits as its factorization.

252997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018.

The product of its digits is 11340, while the sum is 34.

The square root of 252997 is about 502.9880714291. The cubic root of 252997 is about 63.2467854449.

The spelling of 252997 in words is "two hundred fifty-two thousand, nine hundred ninety-seven".

Divisors: 1 431 587 252997