51037197 has 4 divisors (see below), whose sum is σ = 68049600. Its totient is φ = 34024796.

The previous prime is 51037177. The next prime is 51037199. The reversal of 51037197 is 79173015.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51037197 - 2²⁰ = 49988621 is a prime.

It is a super-3 number, since 3×51037197³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51037199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8506197 + ... + 8506202.

It is an arithmetic number, because the mean of its divisors is an integer number (17012400).

Almost surely, 2^51037197 is an apocalyptic number.

It is an amenable number.

51037197 is a deficient number, since it is larger than the sum of its proper divisors (17012403).

51037197 is a wasteful number, since it uses less digits than its factorization.

51037197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17012402.

The product of its (nonzero) digits is 6615, while the sum is 33.

The square root of 51037197 is about 7144.0322647648. The cubic root of 51037197 is about 370.9331134884.

The spelling of 51037197 in words is "fifty-one million, thirty-seven thousand, one hundred ninety-seven".