51648157 has 8 divisors (see below), whose sum is σ = 57116160. Its totient is φ = 46308960.

The previous prime is 51648143. The next prime is 51648173. The reversal of 51648157 is 75184615.

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 51648157 - 2¹⁹ = 51123869 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 (51648127) 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, 31357 + ... + 32962.

It is an arithmetic number, because the mean of its divisors is an integer number (7139520).

Almost surely, 2^51648157 is an apocalyptic number.

It is an amenable number.

51648157 is a deficient number, since it is larger than the sum of its proper divisors (5468003).

51648157 is a wasteful number, since it uses less digits than its factorization.

51648157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64403.

The product of its digits is 33600, while the sum is 37.

The square root of 51648157 is about 7186.6652210883. The cubic root of 51648157 is about 372.4073778392.

The spelling of 51648157 in words is "fifty-one million, six hundred forty-eight thousand, one hundred fifty-seven".