65072553 has 16 divisors (see below), whose sum is σ = 106786176. Its totient is φ = 34323840.

The previous prime is 65072551. The next prime is 65072569. The reversal of 65072553 is 35527056.

It is not a de Polignac number, because 65072553 - 2¹ = 65072551 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65072551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118908 + ... + 119453.

It is an arithmetic number, because the mean of its divisors is an integer number (6674136).

Almost surely, 2^65072553 is an apocalyptic number.

It is an amenable number.

65072553 is a deficient number, since it is larger than the sum of its proper divisors (41713623).

65072553 is a wasteful number, since it uses less digits than its factorization.

65072553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238384.

The product of its (nonzero) digits is 31500, while the sum is 33.

The square root of 65072553 is about 8066.7560394498. The cubic root of 65072553 is about 402.2221180361. Note that the first 3 decimals are identical.

The spelling of 65072553 in words is "sixty-five million, seventy-two thousand, five hundred fifty-three".