51380259 has 16 divisors (see below), whose sum is σ = 79961088. Its totient is φ = 28734912.

The previous prime is 51380249. The next prime is 51380269. The reversal of 51380259 is 95208315.

51380259 is nontrivially palindromic in base 2.

It is an interprime number because it is at equal distance from previous prime (51380249) and next prime (51380269).

It is not a de Polignac number, because 51380259 - 2²⁰ = 50331683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51380249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25042 + ... + 27015.

It is an arithmetic number, because the mean of its divisors is an integer number (4997568).

Almost surely, 2^51380259 is an apocalyptic number.

51380259 is a deficient number, since it is larger than the sum of its proper divisors (28580829).

51380259 is a wasteful number, since it uses less digits than its factorization.

51380259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52114.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 51380259 is about 7168.0024414058. The cubic root of 51380259 is about 371.7623713624.

The spelling of 51380259 in words is "fifty-one million, three hundred eighty thousand, two hundred fifty-nine".