61601151 has 4 divisors (see below), whose sum is σ = 82134872. Its totient is φ = 41067432.

The previous prime is 61601093. The next prime is 61601179. The reversal of 61601151 is 15110616.

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

It is not a de Polignac number, because 61601151 - 2⁶ = 61601087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61601851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10266856 + ... + 10266861.

It is an arithmetic number, because the mean of its divisors is an integer number (20533718).

Almost surely, 2^61601151 is an apocalyptic number.

61601151 is a deficient number, since it is larger than the sum of its proper divisors (20533721).

61601151 is a wasteful number, since it uses less digits than its factorization.

61601151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20533720.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 61601151 is about 7848.6400732866. The cubic root of 61601151 is about 394.9386242298.

Adding to 61601151 its reverse (15110616), we get a palindrome (76711767).

The spelling of 61601151 in words is "sixty-one million, six hundred one thousand, one hundred fifty-one".