51197069 has 16 divisors (see below), whose sum is σ = 65390976. Its totient is φ = 38918400.

The previous prime is 51197063. The next prime is 51197071. The reversal of 51197069 is 96079115.

It is a cyclic number.

It is not a de Polignac number, because 51197069 - 2⁸ = 51196813 is a prime.

It is a super-2 number, since 2×51197069² = 5242279748381522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51197063) 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, 4952 + ... + 11265.

It is an arithmetic number, because the mean of its divisors is an integer number (4086936).

Almost surely, 2^51197069 is an apocalyptic number.

It is an amenable number.

51197069 is a deficient number, since it is larger than the sum of its proper divisors (14193907).

51197069 is a wasteful number, since it uses less digits than its factorization.

51197069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16276.

The product of its (nonzero) digits is 17010, while the sum is 38.

The square root of 51197069 is about 7155.2127152168. The cubic root of 51197069 is about 371.3200208784.

The spelling of 51197069 in words is "fifty-one million, one hundred ninety-seven thousand, sixty-nine".