61501101 has 4 divisors (see below), whose sum is σ = 82001472. Its totient is φ = 41000732.

The previous prime is 61501093. The next prime is 61501159. The reversal of 61501101 is 10110516.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61501101 - 2³ = 61501093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61501501) 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, 10250181 + ... + 10250186.

It is an arithmetic number, because the mean of its divisors is an integer number (20500368).

Almost surely, 2^61501101 is an apocalyptic number.

It is an amenable number.

61501101 is a deficient number, since it is larger than the sum of its proper divisors (20500371).

61501101 is a wasteful number, since it uses less digits than its factorization.

61501101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20500370.

The product of its (nonzero) digits is 30, while the sum is 15.

The square root of 61501101 is about 7842.2637675610. The cubic root of 61501101 is about 394.7246941319.

Adding to 61501101 its reverse (10110516), we get a palindrome (71611617).

The spelling of 61501101 in words is "sixty-one million, five hundred one thousand, one hundred one".