40197253 has 4 divisors (see below), whose sum is σ = 40797280. Its totient is φ = 39597228.

The previous prime is 40197251. The next prime is 40197301. The reversal of 40197253 is 35279104.

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 40197253 - 2¹ = 40197251 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 (40197251) 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, 299913 + ... + 300046.

It is an arithmetic number, because the mean of its divisors is an integer number (10199320).

Almost surely, 2^40197253 is an apocalyptic number.

It is an amenable number.

40197253 is a deficient number, since it is larger than the sum of its proper divisors (600027).

40197253 is an equidigital number, since it uses as much as digits as its factorization.

40197253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600026.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 40197253 is about 6340.1303614358. The cubic root of 40197253 is about 342.5564309313.

The spelling of 40197253 in words is "forty million, one hundred ninety-seven thousand, two hundred fifty-three".