40752531 has 8 divisors (see below), whose sum is σ = 60374160. Its totient is φ = 27168336.

The previous prime is 40752521. The next prime is 40752533. The reversal of 40752531 is 13525704.

It is a happy number.

40752531 is a `hidden beast` number, since 407 + 5 + 253 + 1 = 666.

It is not a de Polignac number, because 40752531 - 2⁵ = 40752499 is a prime.

It is a super-2 number, since 2×40752531² = 3321537565811922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1509353 = 40752531 / (4 + 0 + 7 + 5 + 2 + 5 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 40752495 and 40752504.

It is not an unprimeable number, because it can be changed into a prime (40752533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 754650 + ... + 754703.

It is an arithmetic number, because the mean of its divisors is an integer number (7546770).

Almost surely, 2^40752531 is an apocalyptic number.

40752531 is a deficient number, since it is larger than the sum of its proper divisors (19621629).

40752531 is a wasteful number, since it uses less digits than its factorization.

40752531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1509362 (or 1509356 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 40752531 is about 6383.7709075436. The cubic root of 40752531 is about 344.1265618451.

The spelling of 40752531 in words is "forty million, seven hundred fifty-two thousand, five hundred thirty-one".