40540554 has 32 divisors (see below), whose sum is σ = 92292480. Its totient is φ = 13183200.

The previous prime is 40540553. The next prime is 40540583. The reversal of 40540554 is 45504504.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (40540553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6942 + ... + 11369.

It is an arithmetic number, because the mean of its divisors is an integer number (2884140).

Almost surely, 2^40540554 is an apocalyptic number.

40540554 is an abundant number, since it is smaller than the sum of its proper divisors (51751926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40540554 is a wasteful number, since it uses less digits than its factorization.

40540554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18363 (or 18357 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 40540554 is about 6367.1464566162. The cubic root of 40540554 is about 343.5288585811.

The spelling of 40540554 in words is "forty million, five hundred forty thousand, five hundred fifty-four".