253473487 has 4 divisors (see below), whose sum is σ = 254889720. Its totient is φ = 252057256.

The previous prime is 253473481. The next prime is 253473497. The reversal of 253473487 is 784374352.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 253473487 - 2⁷ = 253473359 is a prime.

It is a super-2 number, since 2×253473487² = 128497617223878338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253473481) 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, 707848 + ... + 708205.

It is an arithmetic number, because the mean of its divisors is an integer number (63722430).

Almost surely, 2^253473487 is an apocalyptic number.

253473487 is a deficient number, since it is larger than the sum of its proper divisors (1416233).

253473487 is a wasteful number, since it uses less digits than its factorization.

253473487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416232.

The product of its digits is 564480, while the sum is 43.

The square root of 253473487 is about 15920.8506996329. The cubic root of 253473487 is about 632.8646624688.

The spelling of 253473487 in words is "two hundred fifty-three million, four hundred seventy-three thousand, four hundred eighty-seven".