253140646 has 8 divisors (see below), whose sum is σ = 414230184. Its totient is φ = 115063920.

The previous prime is 253140611. The next prime is 253140647. The reversal of 253140646 is 646041352.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253140647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5753175 + ... + 5753218.

It is an arithmetic number, because the mean of its divisors is an integer number (51778773).

Almost surely, 2^253140646 is an apocalyptic number.

253140646 is a deficient number, since it is larger than the sum of its proper divisors (161089538).

253140646 is a wasteful number, since it uses less digits than its factorization.

253140646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11506406.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 253140646 is about 15910.3942754414. The cubic root of 253140646 is about 632.5875321374.

Adding to 253140646 its reverse (646041352), we get a palindrome (899181998).

The spelling of 253140646 in words is "two hundred fifty-three million, one hundred forty thousand, six hundred forty-six".