51109274 has 4 divisors (see below), whose sum is σ = 76663914. Its totient is φ = 25554636.

The previous prime is 51109237. The next prime is 51109301. The reversal of 51109274 is 47290115.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47290115 = 5 ⋅9458023.

It can be written as a sum of positive squares in only one way, i.e., 45657049 + 5452225 = 6757^2 + 2335^2 .

It is a super-2 number, since 2×51109274² = 5224315777614152, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12777317 + ... + 12777320.

Almost surely, 2^51109274 is an apocalyptic number.

51109274 is a deficient number, since it is larger than the sum of its proper divisors (25554640).

51109274 is a wasteful number, since it uses less digits than its factorization.

51109274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25554639.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 51109274 is about 7149.0750450670. The cubic root of 51109274 is about 371.1076474339.

Adding to 51109274 its reverse (47290115), we get a palindrome (98399389).

The spelling of 51109274 in words is "fifty-one million, one hundred nine thousand, two hundred seventy-four".