40135651 has 2 divisors, whose sum is σ = 40135652. Its totient is φ = 40135650.

The previous prime is 40135633. The next prime is 40135663. The reversal of 40135651 is 15653104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40135651 - 2⁷ = 40135523 is a prime.

It is a super-2 number, since 2×40135651² = 3221740962387602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40135451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20067825 + 20067826.

It is an arithmetic number, because the mean of its divisors is an integer number (20067826).

Almost surely, 2^40135651 is an apocalyptic number.

40135651 is a deficient number, since it is larger than the sum of its proper divisors (1).

40135651 is an equidigital number, since it uses as much as digits as its factorization.

40135651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 40135651 is about 6335.2703967550. The cubic root of 40135651 is about 342.3813530465.

Adding to 40135651 its reverse (15653104), we get a palindrome (55788755).

The spelling of 40135651 in words is "forty million, one hundred thirty-five thousand, six hundred fifty-one".