40133251 has 4 divisors (see below), whose sum is σ = 41427904. Its totient is φ = 38838600.

The previous prime is 40133231. The next prime is 40133267. The reversal of 40133251 is 15233104.

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

It is a cyclic number.

It is not a de Polignac number, because 40133251 - 2⁹ = 40132739 is a prime.

It is a super-2 number, since 2×40133251² = 3221355671658002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40133231) 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, 647280 + ... + 647341.

It is an arithmetic number, because the mean of its divisors is an integer number (10356976).

Almost surely, 2^40133251 is an apocalyptic number.

40133251 is a deficient number, since it is larger than the sum of its proper divisors (1294653).

40133251 is a wasteful number, since it uses less digits than its factorization.

40133251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294652.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 40133251 is about 6335.0809781723. The cubic root of 40133251 is about 342.3745284272.

Adding to 40133251 its reverse (15233104), we get a palindrome (55366355).

The spelling of 40133251 in words is "forty million, one hundred thirty-three thousand, two hundred fifty-one".