252746403 has 32 divisors (see below), whose sum is σ = 415650816. Its totient is φ = 133031808.

The previous prime is 252746399. The next prime is 252746407. The reversal of 252746403 is 304647252.

It is a Cunningham number, because it is equal to 15898²-1.

It is an interprime number because it is at equal distance from previous prime (252746399) and next prime (252746407).

It is not a de Polignac number, because 252746403 - 2² = 252746399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252746407) 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 31 ways as a sum of consecutive naturals, for example, 206050 + ... + 207272.

It is an arithmetic number, because the mean of its divisors is an integer number (12989088).

Almost surely, 2^252746403 is an apocalyptic number.

252746403 is a deficient number, since it is larger than the sum of its proper divisors (162904413).

252746403 is a wasteful number, since it uses less digits than its factorization.

252746403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003.

The product of its (nonzero) digits is 40320, while the sum is 33.

The square root of 252746403 is about 15897.9999685495. Note that the first 4 decimals coincide. The cubic root of 252746403 is about 632.2589627677.

The spelling of 252746403 in words is "two hundred fifty-two million, seven hundred forty-six thousand, four hundred three".