253930445 has 32 divisors (see below), whose sum is σ = 333704448. Its totient is φ = 184716288.

The previous prime is 253930441. The next prime is 253930447. The reversal of 253930445 is 544039352.

It is not a de Polignac number, because 253930445 - 2² = 253930441 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253930441) 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, 826982 + ... + 827288.

It is an arithmetic number, because the mean of its divisors is an integer number (10428264).

Almost surely, 2^253930445 is an apocalyptic number.

It is an amenable number.

253930445 is a deficient number, since it is larger than the sum of its proper divisors (79774003).

253930445 is a wasteful number, since it uses less digits than its factorization.

253930445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629.

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 253930445 is about 15935.1951666743. The cubic root of 253930445 is about 633.2447403010.

Adding to 253930445 its reverse (544039352), we get a palindrome (797969797).

The spelling of 253930445 in words is "two hundred fifty-three million, nine hundred thirty thousand, four hundred forty-five".