253000251 has 12 divisors (see below), whose sum is σ = 417651312. Its totient is φ = 144571536.

The previous prime is 253000247. The next prime is 253000277. The reversal of 253000251 is 152000352.

It is a happy number.

It is not a de Polignac number, because 253000251 - 2² = 253000247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (253001251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2007876 + ... + 2008001.

It is an arithmetic number, because the mean of its divisors is an integer number (34804276).

Almost surely, 2^253000251 is an apocalyptic number.

253000251 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

253000251 is a deficient number, since it is larger than the sum of its proper divisors (164651061).

253000251 is a wasteful number, since it uses less digits than its factorization.

253000251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4015890 (or 4015887 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 253000251 is about 15905.9816107023. The cubic root of 253000251 is about 632.4705634985.

The spelling of 253000251 in words is "two hundred fifty-three million, two hundred fifty-one", and thus it is an aban number.