51142330 has 8 divisors (see below), whose sum is σ = 92056212. Its totient is φ = 20456928.

The previous prime is 51142303. The next prime is 51142361. The reversal of 51142330 is 3324115.

It can be written as a sum of positive squares in 2 ways, for example, as 49322529 + 1819801 = 7023^2 + 1349^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 51142298 and 51142307.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2557107 + ... + 2557126.

Almost surely, 2^51142330 is an apocalyptic number.

51142330 is a deficient number, since it is larger than the sum of its proper divisors (40913882).

51142330 is a wasteful number, since it uses less digits than its factorization.

51142330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5114240.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 51142330 is about 7151.3865788391. The cubic root of 51142330 is about 371.1876374218.

Adding to 51142330 its reverse (3324115), we get a palindrome (54466445).

The spelling of 51142330 in words is "fifty-one million, one hundred forty-two thousand, three hundred thirty".