51606154 has 4 divisors (see below), whose sum is σ = 77409234. Its totient is φ = 25803076.

The previous prime is 51606133. The next prime is 51606161. The reversal of 51606154 is 45160615.

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., 35081929 + 16524225 = 5923^2 + 4065^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12901537 + ... + 12901540.

Almost surely, 2^51606154 is an apocalyptic number.

51606154 is a deficient number, since it is larger than the sum of its proper divisors (25803080).

51606154 is a wasteful number, since it uses less digits than its factorization.

51606154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25803079.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 51606154 is about 7183.7423394774. The cubic root of 51606154 is about 372.3063966989.

Adding to 51606154 its reverse (45160615), we get a palindrome (96766769).

The spelling of 51606154 in words is "fifty-one million, six hundred six thousand, one hundred fifty-four".