51196490 has 8 divisors (see below), whose sum is σ = 92153700. Its totient is φ = 20478592.

The previous prime is 51196487. The next prime is 51196499. The reversal of 51196490 is 9469115.

It can be written as a sum of positive squares in 2 ways, for example, as 48038761 + 3157729 = 6931^2 + 1777^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 51196490.

It is not an unprimeable number, because it can be changed into a prime (51196499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2559815 + ... + 2559834.

Almost surely, 2^51196490 is an apocalyptic number.

51196490 is a deficient number, since it is larger than the sum of its proper divisors (40957210).

51196490 is a wasteful number, since it uses less digits than its factorization.

51196490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5119656.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 51196490 is about 7155.1722550893. The cubic root of 51196490 is about 371.3186210905.

The spelling of 51196490 in words is "fifty-one million, one hundred ninety-six thousand, four hundred ninety".