40297451 has 4 divisors (see below), whose sum is σ = 40325304. Its totient is φ = 40269600.

The previous prime is 40297447. The next prime is 40297459. The reversal of 40297451 is 15479204.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40297451 - 2² = 40297447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40297459) 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, 11630 + ... + 14691.

It is an arithmetic number, because the mean of its divisors is an integer number (10081326).

Almost surely, 2^40297451 is an apocalyptic number.

40297451 is a deficient number, since it is larger than the sum of its proper divisors (27853).

40297451 is a wasteful number, since it uses less digits than its factorization.

40297451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27852.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 40297451 is about 6348.0273313841. The cubic root of 40297451 is about 342.8408200976.

The spelling of 40297451 in words is "forty million, two hundred ninety-seven thousand, four hundred fifty-one".