253451045 has 8 divisors (see below), whose sum is σ = 322032024. Its totient is φ = 190833664.

The previous prime is 253451021. The next prime is 253451059. The reversal of 253451045 is 540154352.

It can be written as a sum of positive squares in 4 ways, for example, as 18472804 + 234978241 = 4298^2 + 15329^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 253451045 - 2⁸ = 253450789 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253450999 and 253451017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1490804 + ... + 1490973.

It is an arithmetic number, because the mean of its divisors is an integer number (40254003).

Almost surely, 2^253451045 is an apocalyptic number.

It is an amenable number.

253451045 is a deficient number, since it is larger than the sum of its proper divisors (68580979).

253451045 is a wasteful number, since it uses less digits than its factorization.

253451045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2981799.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 253451045 is about 15920.1458850100. The cubic root of 253451045 is about 632.8459844234.

The spelling of 253451045 in words is "two hundred fifty-three million, four hundred fifty-one thousand, forty-five".