51148773 has 16 divisors (see below), whose sum is σ = 81605440. Its totient is φ = 31475952.

The previous prime is 51148759. The next prime is 51148777. The reversal of 51148773 is 37784115.

It is not a de Polignac number, because 51148773 - 2⁹ = 51148261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51148777) 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, 72511 + ... + 73212.

It is an arithmetic number, because the mean of its divisors is an integer number (5100340).

Almost surely, 2^51148773 is an apocalyptic number.

It is an amenable number.

51148773 is a deficient number, since it is larger than the sum of its proper divisors (30456667).

51148773 is a wasteful number, since it uses less digits than its factorization.

51148773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145745 (or 145739 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 51148773 is about 7151.8370367340. The cubic root of 51148773 is about 371.2032243894.

It can be divided in two parts, 511 and 48773, that added together give a square (49284 = 222²).

The spelling of 51148773 in words is "fifty-one million, one hundred forty-eight thousand, seven hundred seventy-three".