134987551 has 2 divisors, whose sum is σ = 134987552. Its totient is φ = 134987550.

The previous prime is 134987527. The next prime is 134987557. The reversal of 134987551 is 155789431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 134987551 - 2⁵ = 134987519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 134987498 and 134987507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134987557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67493775 + 67493776.

It is an arithmetic number, because the mean of its divisors is an integer number (67493776).

Almost surely, 2^134987551 is an apocalyptic number.

134987551 is a deficient number, since it is larger than the sum of its proper divisors (1).

134987551 is an equidigital number, since it uses as much as digits as its factorization.

134987551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 43.

The square root of 134987551 is about 11618.4143066083. The cubic root of 134987551 is about 512.9770150068.

The spelling of 134987551 in words is "one hundred thirty-four million, nine hundred eighty-seven thousand, five hundred fifty-one".