51373977 has 8 divisors (see below), whose sum is σ = 68690880. Its totient is φ = 34153200.

The previous prime is 51373939. The next prime is 51373997. The reversal of 51373977 is 77937315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51373977 - 2⁷ = 51373849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51373997) 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, 22774 + ... + 24927.

It is an arithmetic number, because the mean of its divisors is an integer number (8586360).

Almost surely, 2^51373977 is an apocalyptic number.

It is an amenable number.

51373977 is a deficient number, since it is larger than the sum of its proper divisors (17316903).

51373977 is a wasteful number, since it uses less digits than its factorization.

51373977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48063.

The product of its digits is 138915, while the sum is 42.

The square root of 51373977 is about 7167.5642306156. The cubic root of 51373977 is about 371.7472195872.

The spelling of 51373977 in words is "fifty-one million, three hundred seventy-three thousand, nine hundred seventy-seven".