51761587 has 8 divisors (see below), whose sum is σ = 52654032. Its totient is φ = 50872800.

The previous prime is 51761581. The next prime is 51761597. The reversal of 51761587 is 78516715.

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 51761587 - 2⁷ = 51761459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51761581) 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, 54537 + ... + 55477.

It is an arithmetic number, because the mean of its divisors is an integer number (6581754).

Almost surely, 2^51761587 is an apocalyptic number.

51761587 is a deficient number, since it is larger than the sum of its proper divisors (892445).

51761587 is an equidigital number, since it uses as much as digits as its factorization.

51761587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829.

The product of its digits is 58800, while the sum is 40.

The square root of 51761587 is about 7194.5525920657. The cubic root of 51761587 is about 372.6798062912.

The spelling of 51761587 in words is "fifty-one million, seven hundred sixty-one thousand, five hundred eighty-seven".