253149737 has 4 divisors (see below), whose sum is σ = 268040916. Its totient is φ = 238258560.

The previous prime is 253149709. The next prime is 253149739. The reversal of 253149737 is 737941352.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 190881856 + 62267881 = 13816^2 + 7891^2 .

It is a cyclic number.

It is not a de Polignac number, because 253149737 - 2¹⁶ = 253084201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253149694 and 253149703.

It is not an unprimeable number, because it can be changed into a prime (253149739) 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 3 ways as a sum of consecutive naturals, for example, 7445564 + ... + 7445597.

It is an arithmetic number, because the mean of its divisors is an integer number (67010229).

Almost surely, 2^253149737 is an apocalyptic number.

It is an amenable number.

253149737 is a deficient number, since it is larger than the sum of its proper divisors (14891179).

253149737 is a wasteful number, since it uses less digits than its factorization.

253149737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14891178.

The product of its digits is 158760, while the sum is 41.

The square root of 253149737 is about 15910.6799666136. The cubic root of 253149737 is about 632.5951047188.

The spelling of 253149737 in words is "two hundred fifty-three million, one hundred forty-nine thousand, seven hundred thirty-seven".