51549497 has 8 divisors (see below), whose sum is σ = 53713152. Its totient is φ = 49417200.

The previous prime is 51549493. The next prime is 51549499. The reversal of 51549497 is 79494515.

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 51549497 - 2² = 51549493 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51549493) 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, 4454 + ... + 11087.

It is an arithmetic number, because the mean of its divisors is an integer number (6714144).

Almost surely, 2^51549497 is an apocalyptic number.

It is an amenable number.

51549497 is a deficient number, since it is larger than the sum of its proper divisors (2163655).

51549497 is a wasteful number, since it uses less digits than its factorization.

51549497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15679.

The product of its digits is 226800, while the sum is 44.

The square root of 51549497 is about 7179.7978383796. The cubic root of 51549497 is about 372.1700984346.

The spelling of 51549497 in words is "fifty-one million, five hundred forty-nine thousand, four hundred ninety-seven".