51587245 has 8 divisors (see below), whose sum is σ = 61981920. Its totient is φ = 41218320.

The previous prime is 51587203. The next prime is 51587257. The reversal of 51587245 is 54278515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51587245 - 2⁷ = 51587117 is a prime.

It is a super-2 number, since 2×51587245² = 5322487693380050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1711 + ... + 10300.

It is an arithmetic number, because the mean of its divisors is an integer number (7747740).

Almost surely, 2^51587245 is an apocalyptic number.

It is an amenable number.

51587245 is a deficient number, since it is larger than the sum of its proper divisors (10394675).

51587245 is a wasteful number, since it uses less digits than its factorization.

51587245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12875.

The product of its digits is 56000, while the sum is 37.

The square root of 51587245 is about 7182.4261221401. The cubic root of 51587245 is about 372.2609189079.

It can be divided in two parts, 5158 and 7245, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 51587245 in words is "fifty-one million, five hundred eighty-seven thousand, two hundred forty-five".