40981151 has 4 divisors (see below), whose sum is σ = 41195904. Its totient is φ = 40766400.

The previous prime is 40981141. The next prime is 40981189. The reversal of 40981151 is 15118904.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40981151 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 (40981111) 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, 107090 + ... + 107471.

It is an arithmetic number, because the mean of its divisors is an integer number (10298976).

Almost surely, 2^40981151 is an apocalyptic number.

40981151 is a deficient number, since it is larger than the sum of its proper divisors (214753).

40981151 is a wasteful number, since it uses less digits than its factorization.

40981151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214752.

The product of its (nonzero) digits is 1440, while the sum is 29.

The square root of 40981151 is about 6401.6522086099. The cubic root of 40981151 is about 344.7688741119.

The spelling of 40981151 in words is "forty million, nine hundred eighty-one thousand, one hundred fifty-one".