51357745 has 8 divisors (see below), whose sum is σ = 61684416. Its totient is φ = 41049456.

The previous prime is 51357743. The next prime is 51357751. The reversal of 51357745 is 54775315.

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

It is a cyclic number.

It is not a de Polignac number, because 51357745 - 2¹ = 51357743 is a prime.

It is a super-3 number, since 3×51357745³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51357743) 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, 2574 + ... + 10456.

It is an arithmetic number, because the mean of its divisors is an integer number (7710552).

Almost surely, 2^51357745 is an apocalyptic number.

It is an amenable number.

51357745 is a deficient number, since it is larger than the sum of its proper divisors (10326671).

51357745 is a wasteful number, since it uses less digits than its factorization.

51357745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9191.

The product of its digits is 73500, while the sum is 37.

The square root of 51357745 is about 7166.4318178575. The cubic root of 51357745 is about 371.7080633395.

It can be divided in two parts, 5135 and 7745, that added together give a triangular number (12880 = T₁₆₀).

The spelling of 51357745 in words is "fifty-one million, three hundred fifty-seven thousand, seven hundred forty-five".