51747490 has 32 divisors (see below), whose sum is σ = 100932480. Its totient is φ = 19025664.

The previous prime is 51747467. The next prime is 51747491. The reversal of 51747490 is 9474715.

It is not an unprimeable number, because it can be changed into a prime (51747491) 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, 3771 + ... + 10849.

It is an arithmetic number, because the mean of its divisors is an integer number (3154140).

Almost surely, 2^51747490 is an apocalyptic number.

51747490 is a deficient number, since it is larger than the sum of its proper divisors (49184990).

51747490 is a wasteful number, since it uses less digits than its factorization.

51747490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7146.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 51747490 is about 7193.5728257939. The cubic root of 51747490 is about 372.6459707480.

The spelling of 51747490 in words is "fifty-one million, seven hundred forty-seven thousand, four hundred ninety".