51598551 has 16 divisors (see below), whose sum is σ = 70092000. Its totient is φ = 33758208.

The previous prime is 51598543. The next prime is 51598559. The reversal of 51598551 is 15589515.

It is an interprime number because it is at equal distance from previous prime (51598543) and next prime (51598559).

It is not a de Polignac number, because 51598551 - 2³ = 51598543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51598559) 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, 39135 + ... + 40431.

It is an arithmetic number, because the mean of its divisors is an integer number (4380750).

Almost surely, 2^51598551 is an apocalyptic number.

51598551 is a deficient number, since it is larger than the sum of its proper divisors (18493449).

51598551 is a wasteful number, since it uses less digits than its factorization.

51598551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538.

The product of its digits is 45000, while the sum is 39.

The square root of 51598551 is about 7183.2131389790. The cubic root of 51598551 is about 372.2881121576.

The spelling of 51598551 in words is "fifty-one million, five hundred ninety-eight thousand, five hundred fifty-one".