51742486 has 4 divisors (see below), whose sum is σ = 77613732. Its totient is φ = 25871242.

The previous prime is 51742463. The next prime is 51742487. The reversal of 51742486 is 68424715.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51742487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12935620 + ... + 12935623.

It is an arithmetic number, because the mean of its divisors is an integer number (19403433).

Almost surely, 2^51742486 is an apocalyptic number.

51742486 is a deficient number, since it is larger than the sum of its proper divisors (25871246).

51742486 is a wasteful number, since it uses less digits than its factorization.

51742486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25871245.

The product of its digits is 53760, while the sum is 37.

The square root of 51742486 is about 7193.2250069075. The cubic root of 51742486 is about 372.6339586965.

The spelling of 51742486 in words is "fifty-one million, seven hundred forty-two thousand, four hundred eighty-six".