40247573 has 4 divisors (see below), whose sum is σ = 40367340. Its totient is φ = 40127808.

The previous prime is 40247561. The next prime is 40247587. The reversal of 40247573 is 37574204.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10195249 + 30052324 = 3193^2 + 5482^2 .

It is a cyclic number.

It is not a de Polignac number, because 40247573 - 2⁶ = 40247509 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 (40247513) 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, 59378 + ... + 60051.

It is an arithmetic number, because the mean of its divisors is an integer number (10091835).

Almost surely, 2^40247573 is an apocalyptic number.

It is an amenable number.

40247573 is a deficient number, since it is larger than the sum of its proper divisors (119767).

40247573 is a wasteful number, since it uses less digits than its factorization.

40247573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119766.

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 40247573 is about 6344.0974929457. The cubic root of 40247573 is about 342.6993117714.

The spelling of 40247573 in words is "forty million, two hundred forty-seven thousand, five hundred seventy-three".