51742154 has 4 divisors (see below), whose sum is σ = 77613234. Its totient is φ = 25871076.

The previous prime is 51742147. The next prime is 51742183. The reversal of 51742154 is 45124715.

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

It can be written as a sum of positive squares in only one way, i.e., 50481025 + 1261129 = 7105^2 + 1123^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12935537 + ... + 12935540.

Almost surely, 2^51742154 is an apocalyptic number.

51742154 is a deficient number, since it is larger than the sum of its proper divisors (25871080).

51742154 is a wasteful number, since it uses less digits than its factorization.

51742154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25871079.

The product of its digits is 5600, while the sum is 29.

The square root of 51742154 is about 7193.2019295999. The cubic root of 51742154 is about 372.6331617064.

Adding to 51742154 its reverse (45124715), we get a palindrome (96866869).

The spelling of 51742154 in words is "fifty-one million, seven hundred forty-two thousand, one hundred fifty-four".