51448618 has 16 divisors (see below), whose sum is σ = 87484320. Its totient is φ = 22495536.

The previous prime is 51448609. The next prime is 51448619. The reversal of 51448618 is 81684415.

It is not an unprimeable number, because it can be changed into a prime (51448619) 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, 51580 + ... + 52567.

It is an arithmetic number, because the mean of its divisors is an integer number (5467770).

Almost surely, 2^51448618 is an apocalyptic number.

51448618 is a deficient number, since it is larger than the sum of its proper divisors (36035702).

51448618 is a wasteful number, since it uses less digits than its factorization.

51448618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104181.

The product of its digits is 30720, while the sum is 37.

The square root of 51448618 is about 7172.7692002462. The cubic root of 51448618 is about 371.9271690386.

The spelling of 51448618 in words is "fifty-one million, four hundred forty-eight thousand, six hundred eighteen".