253505949 has 16 divisors (see below), whose sum is σ = 344855040. Its totient is φ = 165599280.

The previous prime is 253505939. The next prime is 253505953. The reversal of 253505949 is 949505352.

It is not a de Polignac number, because 253505949 - 2⁴ = 253505933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 253505949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253505939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56424 + ... + 60750.

It is an arithmetic number, because the mean of its divisors is an integer number (21553440).

Almost surely, 2^253505949 is an apocalyptic number.

It is an amenable number.

253505949 is a deficient number, since it is larger than the sum of its proper divisors (91349091).

253505949 is a wasteful number, since it uses less digits than its factorization.

253505949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4720.

The product of its (nonzero) digits is 243000, while the sum is 42.

The square root of 253505949 is about 15921.8701476931. The cubic root of 253505949 is about 632.8916780172.

The spelling of 253505949 in words is "two hundred fifty-three million, five hundred five thousand, nine hundred forty-nine".