253491539 has 32 divisors (see below), whose sum is σ = 318836736. Its totient is φ = 196600320.

The previous prime is 253491509. The next prime is 253491547. The reversal of 253491539 is 935194352.

It is not a de Polignac number, because 253491539 - 2⁸ = 253491283 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253491496 and 253491505.

It is not an unprimeable number, because it can be changed into a prime (253491509) 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, 340802 + ... + 341544.

It is an arithmetic number, because the mean of its divisors is an integer number (9963648).

Almost surely, 2^253491539 is an apocalyptic number.

253491539 is a deficient number, since it is larger than the sum of its proper divisors (65345197).

253491539 is a wasteful number, since it uses less digits than its factorization.

253491539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875.

The product of its digits is 145800, while the sum is 41.

The square root of 253491539 is about 15921.4176190439. The cubic root of 253491539 is about 632.8796860016.

The spelling of 253491539 in words is "two hundred fifty-three million, four hundred ninety-one thousand, five hundred thirty-nine".