40507573 has 4 divisors (see below), whose sum is σ = 40529728. Its totient is φ = 40485420.

The previous prime is 40507553. The next prime is 40507589. The reversal of 40507573 is 37570504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40507573 - 2⁵ = 40507541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40507553) 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, 8061 + ... + 12082.

It is an arithmetic number, because the mean of its divisors is an integer number (10132432).

Almost surely, 2^40507573 is an apocalyptic number.

It is an amenable number.

40507573 is a deficient number, since it is larger than the sum of its proper divisors (22155).

40507573 is a wasteful number, since it uses less digits than its factorization.

40507573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22154.

The product of its (nonzero) digits is 14700, while the sum is 31.

The square root of 40507573 is about 6364.5559939402. Note that the first 3 decimals coincide. The cubic root of 40507573 is about 343.4356761751.

The spelling of 40507573 in words is "forty million, five hundred seven thousand, five hundred seventy-three".