40755157 has 4 divisors (see below), whose sum is σ = 41622336. Its totient is φ = 39887980.

The previous prime is 40755151. The next prime is 40755161. The reversal of 40755157 is 75155704.

It is a happy number.

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 40755157 - 2²³ = 32366549 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 (40755151) 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, 433519 + ... + 433612.

It is an arithmetic number, because the mean of its divisors is an integer number (10405584).

Almost surely, 2^40755157 is an apocalyptic number.

40755157 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

40755157 is a deficient number, since it is larger than the sum of its proper divisors (867179).

40755157 is an equidigital number, since it uses as much as digits as its factorization.

40755157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867178.

The product of its (nonzero) digits is 24500, while the sum is 34.

The square root of 40755157 is about 6383.9765820372. The cubic root of 40755157 is about 344.1339532628.

The spelling of 40755157 in words is "forty million, seven hundred fifty-five thousand, one hundred fifty-seven".