253390029 has 4 divisors (see below), whose sum is σ = 337853376. Its totient is φ = 168926684.

The previous prime is 253390021. The next prime is 253390043. The reversal of 253390029 is 920093352.

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.

It is a cyclic number.

It is not a de Polignac number, because 253390029 - 2³ = 253390021 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253390021) 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, 42231669 + ... + 42231674.

It is an arithmetic number, because the mean of its divisors is an integer number (84463344).

Almost surely, 2^253390029 is an apocalyptic number.

It is an amenable number.

253390029 is a deficient number, since it is larger than the sum of its proper divisors (84463347).

253390029 is an equidigital number, since it uses as much as digits as its factorization.

253390029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84463346.

The product of its (nonzero) digits is 14580, while the sum is 33.

The square root of 253390029 is about 15918.2294555645. The cubic root of 253390029 is about 632.7951964042.

The spelling of 253390029 in words is "two hundred fifty-three million, three hundred ninety thousand, twenty-nine".