40151655 has 48 divisors (see below), whose sum is σ = 73981440. Its totient is φ = 20088000.

The previous prime is 40151621. The next prime is 40151659. The reversal of 40151655 is 55615104.

It is a happy number.

40151655 is a `hidden beast` number, since 4 + 0 + 1 + 5 + 1 + 655 = 666.

40151655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40151655 - 2⁶ = 40151591 is a prime.

It is a super-2 number, since 2×40151655² = 3224310798478050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40151659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 128950 + ... + 129260.

It is an arithmetic number, because the mean of its divisors is an integer number (1541280).

Almost surely, 2^40151655 is an apocalyptic number.

40151655 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40151655 is a deficient number, since it is larger than the sum of its proper divisors (33829785).

40151655 is a wasteful number, since it uses less digits than its factorization.

40151655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492 (or 489 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 40151655 is about 6336.5333582330. The cubic root of 40151655 is about 342.4268549290.

Adding to 40151655 its reverse (55615104), we get a palindrome (95766759).

The spelling of 40151655 in words is "forty million, one hundred fifty-one thousand, six hundred fifty-five".