40465501 has 4 divisors (see below), whose sum is σ = 40481404. Its totient is φ = 40449600.

The previous prime is 40465499. The next prime is 40465511. The reversal of 40465501 is 10556404.

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 18619225 + 21846276 = 4315^2 + 4674^2 .

It is a 3-Lehmer number, since φ(40465501) divides (40465501-1)³.

It is a cyclic number.

It is not a de Polignac number, because 40465501 - 2¹ = 40465499 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 (40465511) 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, 3180 + ... + 9541.

It is an arithmetic number, because the mean of its divisors is an integer number (10120351).

Almost surely, 2^40465501 is an apocalyptic number.

40465501 is the 3181-st decagonal number.

It is an amenable number.

40465501 is a deficient number, since it is larger than the sum of its proper divisors (15903).

40465501 is a wasteful number, since it uses less digits than its factorization.

40465501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15902.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 40465501 is about 6361.2499557870. The cubic root of 40465501 is about 343.3167351974.

The spelling of 40465501 in words is "forty million, four hundred sixty-five thousand, five hundred one".