65151557 has 2 divisors, whose sum is σ = 65151558. Its totient is φ = 65151556.

The previous prime is 65151547. The next prime is 65151563. The reversal of 65151557 is 75515156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50779876 + 14371681 = 7126^2 + 3791^2 .

It is a cyclic number.

It is not a de Polignac number, because 65151557 - 2⁸ = 65151301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65151547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32575778 + 32575779.

It is an arithmetic number, because the mean of its divisors is an integer number (32575779).

Almost surely, 2^65151557 is an apocalyptic number.

It is an amenable number.

65151557 is a deficient number, since it is larger than the sum of its proper divisors (1).

65151557 is an equidigital number, since it uses as much as digits as its factorization.

65151557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26250, while the sum is 35.

The square root of 65151557 is about 8071.6514419293. The cubic root of 65151557 is about 402.3848302873.

The spelling of 65151557 in words is "sixty-five million, one hundred fifty-one thousand, five hundred fifty-seven".