253401545 has 8 divisors (see below), whose sum is σ = 304225800. Its totient is φ = 202625280.

The previous prime is 253401523. The next prime is 253401569. The reversal of 253401545 is 545104352.

It can be written as a sum of positive squares in 4 ways, for example, as 27290176 + 226111369 = 5224^2 + 15037^2 .

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

It is not a de Polignac number, because 253401545 - 2¹⁴ = 253385161 is a prime.

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, 881 + ... + 22529.

It is an arithmetic number, because the mean of its divisors is an integer number (38028225).

Almost surely, 2^253401545 is an apocalyptic number.

It is an amenable number.

253401545 is a deficient number, since it is larger than the sum of its proper divisors (50824255).

253401545 is a wasteful number, since it uses less digits than its factorization.

253401545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23995.

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

The square root of 253401545 is about 15918.5911751009. The cubic root of 253401545 is about 632.8047826260.

Adding to 253401545 its reverse (545104352), we get a palindrome (798505897).

The spelling of 253401545 in words is "two hundred fifty-three million, four hundred one thousand, five hundred forty-five".