51172354 has 4 divisors (see below), whose sum is σ = 76758534. Its totient is φ = 25586176.

The previous prime is 51172349. The next prime is 51172361. The reversal of 51172354 is 45327115.

It is a happy number.

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., 50794129 + 378225 = 7127^2 + 615^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12793087 + ... + 12793090.

Almost surely, 2^51172354 is an apocalyptic number.

51172354 is a deficient number, since it is larger than the sum of its proper divisors (25586180).

51172354 is a wasteful number, since it uses less digits than its factorization.

51172354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25586179.

The product of its digits is 4200, while the sum is 28.

The square root of 51172354 is about 7153.4854441734. The cubic root of 51172354 is about 371.2602606119.

Adding to 51172354 its reverse (45327115), we get a palindrome (96499469).

The spelling of 51172354 in words is "fifty-one million, one hundred seventy-two thousand, three hundred fifty-four".