253061240 has 32 divisors (see below), whose sum is σ = 574436880. Its totient is φ = 100326912.

The previous prime is 253061239. The next prime is 253061261. The reversal of 253061240 is 42160352.

253061240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23474 + ... + 32513.

Almost surely, 2^253061240 is an apocalyptic number.

253061240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253061240 is an abundant number, since it is smaller than the sum of its proper divisors (321375640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253061240 is a wasteful number, since it uses less digits than its factorization.

253061240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56111 (or 56107 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 253061240 is about 15907.8986670144. The cubic root of 253061240 is about 632.5213811662.

The spelling of 253061240 in words is "two hundred fifty-three million, sixty-one thousand, two hundred forty".