40231755 has 16 divisors (see below), whose sum is σ = 71523360. Its totient is φ = 21456864.

The previous prime is 40231727. The next prime is 40231781. The reversal of 40231755 is 55713204.

It is a happy number.

It is not a de Polignac number, because 40231755 - 2¹² = 40227659 is a prime.

It is a super-2 number, since 2×40231755² = 3237188220760050, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148872 + ... + 149141.

It is an arithmetic number, because the mean of its divisors is an integer number (4470210).

Almost surely, 2^40231755 is an apocalyptic number.

40231755 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40231755 is a deficient number, since it is larger than the sum of its proper divisors (31291605).

40231755 is a wasteful number, since it uses less digits than its factorization.

40231755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298027 (or 298021 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 40231755 is about 6342.8506998037. The cubic root of 40231755 is about 342.6544102811.

Adding to 40231755 its reverse (55713204), we get a palindrome (95944959).

It can be divided in two parts, 4023 and 1755, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 40231755 in words is "forty million, two hundred thirty-one thousand, seven hundred fifty-five".