51532065 has 32 divisors (see below), whose sum is σ = 98663040. Its totient is φ = 25368768.

The previous prime is 51532051. The next prime is 51532067. The reversal of 51532065 is 56023515.

It is not a de Polignac number, because 51532065 - 2⁶ = 51532001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51532067) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12927 + ... + 16436.

It is an arithmetic number, because the mean of its divisors is an integer number (3083220).

Almost surely, 2^51532065 is an apocalyptic number.

It is an amenable number.

51532065 is a deficient number, since it is larger than the sum of its proper divisors (47130975).

51532065 is a wasteful number, since it uses less digits than its factorization.

51532065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29390 (or 29384 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 51532065 is about 7178.5837739766. The cubic root of 51532065 is about 372.1281426383.

The spelling of 51532065 in words is "fifty-one million, five hundred thirty-two thousand, sixty-five".