51648087 has 8 divisors (see below), whose sum is σ = 71858304. Its totient is φ = 32934968.

The previous prime is 51648049. The next prime is 51648097. The reversal of 51648087 is 78084615.

51648087 = T₂₇₈ + T₂₇₉ + ... + T₆₉₁.

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 51648087 - 2⁸ = 51647831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51648007) 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, 374193 + ... + 374330.

It is an arithmetic number, because the mean of its divisors is an integer number (8982288).

Almost surely, 2^51648087 is an apocalyptic number.

51648087 is a deficient number, since it is larger than the sum of its proper divisors (20210217).

51648087 is a wasteful number, since it uses less digits than its factorization.

51648087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748549.

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 51648087 is about 7186.6603509558. The cubic root of 51648087 is about 372.4072095949.

The spelling of 51648087 in words is "fifty-one million, six hundred forty-eight thousand, eighty-seven".