40550531 has 4 divisors (see below), whose sum is σ = 46343472. Its totient is φ = 34757592.

The previous prime is 40550509. The next prime is 40550533. The reversal of 40550531 is 13505504.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40550531 is a prime.

It is a super-2 number, since 2×40550531² = 3288691128763922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40550497 and 40550506.

It is not an unprimeable number, because it can be changed into a prime (40550533) 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, 2896460 + ... + 2896473.

It is an arithmetic number, because the mean of its divisors is an integer number (11585868).

Almost surely, 2^40550531 is an apocalyptic number.

40550531 is a deficient number, since it is larger than the sum of its proper divisors (5792941).

40550531 is an equidigital number, since it uses as much as digits as its factorization.

40550531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5792940.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 40550531 is about 6367.9298834080. The cubic root of 40550531 is about 343.5570370014.

The spelling of 40550531 in words is "forty million, five hundred fifty thousand, five hundred thirty-one".