52451587 has 4 divisors (see below), whose sum is σ = 53730936. Its totient is φ = 51172240.

The previous prime is 52451557. The next prime is 52451591. The reversal of 52451587 is 78515425.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52451587 - 2¹⁵ = 52418819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52451557) 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, 639613 + ... + 639694.

It is an arithmetic number, because the mean of its divisors is an integer number (13432734).

Almost surely, 2^52451587 is an apocalyptic number.

52451587 is a deficient number, since it is larger than the sum of its proper divisors (1279349).

52451587 is a wasteful number, since it uses less digits than its factorization.

52451587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279348.

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

The square root of 52451587 is about 7242.3467881620. The cubic root of 52451587 is about 374.3284859384.

The spelling of 52451587 in words is "fifty-two million, four hundred fifty-one thousand, five hundred eighty-seven".