51484742 has 4 divisors (see below), whose sum is σ = 77227116. Its totient is φ = 25742370.

The previous prime is 51484739. The next prime is 51484747. The reversal of 51484742 is 24748415.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24748415 = 5 ⋅4949683.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51484747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12871184 + ... + 12871187.

It is an arithmetic number, because the mean of its divisors is an integer number (19306779).

Almost surely, 2^51484742 is an apocalyptic number.

51484742 is a deficient number, since it is larger than the sum of its proper divisors (25742374).

51484742 is a wasteful number, since it uses less digits than its factorization.

51484742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25742373.

The product of its digits is 35840, while the sum is 35.

The square root of 51484742 is about 7175.2868932190. The cubic root of 51484742 is about 372.0141966679.

The spelling of 51484742 in words is "fifty-one million, four hundred eighty-four thousand, seven hundred forty-two".