51353585 has 4 divisors (see below), whose sum is σ = 61624308. Its totient is φ = 41082864.

The previous prime is 51353581. The next prime is 51353591. The reversal of 51353585 is 58535315.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58535315 = 5 ⋅11707063.

It can be written as a sum of positive squares in 2 ways, for example, as 12503296 + 38850289 = 3536^2 + 6233^2 .

It is a cyclic number.

It is not a de Polignac number, because 51353585 - 2² = 51353581 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51353581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5135354 + ... + 5135363.

It is an arithmetic number, because the mean of its divisors is an integer number (15406077).

Almost surely, 2^51353585 is an apocalyptic number.

It is an amenable number.

51353585 is a deficient number, since it is larger than the sum of its proper divisors (10270723).

51353585 is a wasteful number, since it uses less digits than its factorization.

51353585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10270722.

The product of its digits is 45000, while the sum is 35.

The square root of 51353585 is about 7166.1415699105. The cubic root of 51353585 is about 371.6980268962.

The spelling of 51353585 in words is "fifty-one million, three hundred fifty-three thousand, five hundred eighty-five".