65572137 has 12 divisors (see below), whose sum is σ = 95240964. Its totient is φ = 43472160.

The previous prime is 65572127. The next prime is 65572139. The reversal of 65572137 is 73127556.

65572137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 23853456 + 41718681 = 4884^2 + 6459^2 .

It is not a de Polignac number, because 65572137 - 2¹⁰ = 65571113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65572139) 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 11 ways as a sum of consecutive naturals, for example, 18498 + ... + 21755.

It is an arithmetic number, because the mean of its divisors is an integer number (7936747).

Almost surely, 2^65572137 is an apocalyptic number.

It is an amenable number.

65572137 is a deficient number, since it is larger than the sum of its proper divisors (29668827).

65572137 is a wasteful number, since it uses less digits than its factorization.

65572137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40440 (or 40437 counting only the distinct ones).

The product of its digits is 44100, while the sum is 36.

The square root of 65572137 is about 8097.6624404824. The cubic root of 65572137 is about 403.2488267884.

The spelling of 65572137 in words is "sixty-five million, five hundred seventy-two thousand, one hundred thirty-seven".