51770038 has 4 divisors (see below), whose sum is σ = 77655060. Its totient is φ = 25885018.

The previous prime is 51770009. The next prime is 51770051. The reversal of 51770038 is 83007715.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 51769991 and 51770009.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12942508 + ... + 12942511.

It is an arithmetic number, because the mean of its divisors is an integer number (19413765).

Almost surely, 2^51770038 is an apocalyptic number.

51770038 is a deficient number, since it is larger than the sum of its proper divisors (25885022).

51770038 is a wasteful number, since it uses less digits than its factorization.

51770038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25885021.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 51770038 is about 7195.1398874518. The cubic root of 51770038 is about 372.7000873905.

The spelling of 51770038 in words is "fifty-one million, seven hundred seventy thousand, thirty-eight".