51677069 has 4 divisors (see below), whose sum is σ = 51693180. Its totient is φ = 51660960.

The previous prime is 51677053. The next prime is 51677071. The reversal of 51677069 is 96077615.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96077615 = 5 ⋅19215523.

It can be written as a sum of positive squares in 2 ways, for example, as 48302500 + 3374569 = 6950^2 + 1837^2 .

It is a cyclic number.

It is not a de Polignac number, because 51677069 - 2⁴ = 51677053 is a prime.

It is a super-2 number, since 2×51677069² = 5341038920861522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51677039) 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, 1424 + ... + 10265.

It is an arithmetic number, because the mean of its divisors is an integer number (12923295).

Almost surely, 2^51677069 is an apocalyptic number.

It is an amenable number.

51677069 is a deficient number, since it is larger than the sum of its proper divisors (16111).

51677069 is a wasteful number, since it uses less digits than its factorization.

51677069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16110.

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 51677069 is about 7188.6764428509. The cubic root of 51677069 is about 372.4768545594.

The spelling of 51677069 in words is "fifty-one million, six hundred seventy-seven thousand, sixty-nine".