61606151 has 4 divisors (see below), whose sum is σ = 64848600. Its totient is φ = 58363704.

The previous prime is 61606123. The next prime is 61606163. The reversal of 61606151 is 15160616.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61606151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61606151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61606651) 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, 1621196 + ... + 1621233.

It is an arithmetic number, because the mean of its divisors is an integer number (16212150).

Almost surely, 2^61606151 is an apocalyptic number.

61606151 is a deficient number, since it is larger than the sum of its proper divisors (3242449).

61606151 is a wasteful number, since it uses less digits than its factorization.

61606151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3242448.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 61606151 is about 7848.9585933422. The cubic root of 61606151 is about 394.9493093099.

Adding to 61606151 its reverse (15160616), we get a palindrome (76766767).

It can be divided in two parts, 6160615 and 1, that added together give a palindrome (6160616).

The spelling of 61606151 in words is "sixty-one million, six hundred six thousand, one hundred fifty-one".