40348251 has 12 divisors (see below), whose sum is σ = 60290880. Its totient is φ = 25971120.

The previous prime is 40348249. The next prime is 40348261. The reversal of 40348251 is 15284304.

40348251 is a `hidden beast` number, since 403 + 4 + 8 + 251 = 666.

It is not a de Polignac number, because 40348251 - 2¹ = 40348249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40348201) 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, 77035 + ... + 77556.

It is an arithmetic number, because the mean of its divisors is an integer number (5024240).

Almost surely, 2^40348251 is an apocalyptic number.

40348251 is a deficient number, since it is larger than the sum of its proper divisors (19942629).

40348251 is a wasteful number, since it uses less digits than its factorization.

40348251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154626 (or 154623 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 40348251 is about 6352.0273141730. The cubic root of 40348251 is about 342.9848242456.

The spelling of 40348251 in words is "forty million, three hundred forty-eight thousand, two hundred fifty-one".