1253953755 has 24 divisors (see below), whose sum is σ = 2181804768. Its totient is φ = 666226176.

The previous prime is 1253953733. The next prime is 1253953787. The reversal of 1253953755 is 5573593521.

1253953755 is a `hidden beast` number, since 12 + 53 + 9 + 537 + 55 = 666.

It is not a de Polignac number, because 1253953755 - 2¹¹ = 1253951707 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1253953755.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41142 + ... + 64811.

It is an arithmetic number, because the mean of its divisors is an integer number (90908532).

Almost surely, 2^1253953755 is an apocalyptic number.

1253953755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1253953755 is a deficient number, since it is larger than the sum of its proper divisors (927851013).

1253953755 is a wasteful number, since it uses less digits than its factorization.

1253953755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106227 (or 106224 counting only the distinct ones).

The product of its digits is 708750, while the sum is 45.

The square root of 1253953755 is about 35411.2094540698. The cubic root of 1253953755 is about 1078.3518972480.

The spelling of 1253953755 in words is "one billion, two hundred fifty-three million, nine hundred fifty-three thousand, seven hundred fifty-five".