253072481 has 4 divisors (see below), whose sum is σ = 255004464. Its totient is φ = 251140500.

The previous prime is 253072453. The next prime is 253072483. The reversal of 253072481 is 184270352.

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 253072481 - 2¹⁰ = 253071457 is a prime.

It is a super-2 number, since 2×253072481² = 128091361278990722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (253072483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 965795 + ... + 966056.

It is an arithmetic number, because the mean of its divisors is an integer number (63751116).

Almost surely, 2^253072481 is an apocalyptic number.

It is an amenable number.

253072481 is a deficient number, since it is larger than the sum of its proper divisors (1931983).

253072481 is a wasteful number, since it uses less digits than its factorization.

253072481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931982.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 253072481 is about 15908.2519781402. The cubic root of 253072481 is about 632.5307465772.

The spelling of 253072481 in words is "two hundred fifty-three million, seventy-two thousand, four hundred eighty-one".