40745757 has 16 divisors (see below), whose sum is σ = 59754240. Its totient is φ = 24539712.

The previous prime is 40745737. The next prime is 40745767. The reversal of 40745757 is 75754704.

It is not a de Polignac number, because 40745757 - 2¹² = 40741661 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40745717) 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, 9282 + ... + 12947.

It is an arithmetic number, because the mean of its divisors is an integer number (3734640).

Almost surely, 2^40745757 is an apocalyptic number.

40745757 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

40745757 is a deficient number, since it is larger than the sum of its proper divisors (19008483).

40745757 is a wasteful number, since it uses less digits than its factorization.

40745757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22292.

The product of its (nonzero) digits is 137200, while the sum is 39.

The square root of 40745757 is about 6383.2403213415. The cubic root of 40745757 is about 344.1074935611.

It can be divided in two parts, 407 and 45757, that added together give a palindrome (46164).

The spelling of 40745757 in words is "forty million, seven hundred forty-five thousand, seven hundred fifty-seven".