52187551 has 8 divisors (see below), whose sum is σ = 56487200. Its totient is φ = 47928672.

The previous prime is 52187543. The next prime is 52187557. The reversal of 52187551 is 15578125.

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

It is a cyclic number.

It is not a de Polignac number, because 52187551 - 2³ = 52187543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52187557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7500 + ... + 12673.

It is an arithmetic number, because the mean of its divisors is an integer number (7060900).

Almost surely, 2^52187551 is an apocalyptic number.

52187551 is a deficient number, since it is larger than the sum of its proper divisors (4299649).

52187551 is a wasteful number, since it uses less digits than its factorization.

52187551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20385.

The product of its digits is 14000, while the sum is 34.

The square root of 52187551 is about 7224.0951682546. The cubic root of 52187551 is about 373.6993184149.

It can be divided in two parts, 5218 and 7551, that added together give a square (12769 = 113²).

The spelling of 52187551 in words is "fifty-two million, one hundred eighty-seven thousand, five hundred fifty-one".