51301745 has 16 divisors (see below), whose sum is σ = 69327360. Its totient is φ = 36105600.

The previous prime is 51301741. The next prime is 51301751. The reversal of 51301745 is 54710315.

It is not a de Polignac number, because 51301745 - 2² = 51301741 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51301741) 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, 13340 + ... + 16749.

It is an arithmetic number, because the mean of its divisors is an integer number (4332960).

Almost surely, 2^51301745 is an apocalyptic number.

51301745 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51301745 is a deficient number, since it is larger than the sum of its proper divisors (18025615).

51301745 is a wasteful number, since it uses less digits than its factorization.

51301745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30136.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 51301745 is about 7162.5236474304. The cubic root of 51301745 is about 371.5729118847.

The spelling of 51301745 in words is "fifty-one million, three hundred one thousand, seven hundred forty-five".