40134551 has 2 divisors, whose sum is σ = 40134552. Its totient is φ = 40134550.

The previous prime is 40134539. The next prime is 40134557. The reversal of 40134551 is 15543104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40134551 - 2⁶ = 40134487 is a prime.

It is a super-2 number, since 2×40134551² = 3221564367943202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40134557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20067275 + 20067276.

It is an arithmetic number, because the mean of its divisors is an integer number (20067276).

Almost surely, 2^40134551 is an apocalyptic number.

40134551 is a deficient number, since it is larger than the sum of its proper divisors (1).

40134551 is an equidigital number, since it uses as much as digits as its factorization.

40134551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 40134551 is about 6335.1835806076. The cubic root of 40134551 is about 342.3782251298.

Adding to 40134551 its reverse (15543104), we get a palindrome (55677655).

The spelling of 40134551 in words is "forty million, one hundred thirty-four thousand, five hundred fifty-one".