61495501 has 4 divisors (see below), whose sum is σ = 61551100. Its totient is φ = 61439904.

The previous prime is 61495471. The next prime is 61495513. The reversal of 61495501 is 10559416.

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

It can be written as a sum of positive squares in 2 ways, for example, as 23377225 + 38118276 = 4835^2 + 6174^2 .

It is a cyclic number.

It is not a de Polignac number, because 61495501 - 2⁹ = 61494989 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 (61495201) 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, 26106 + ... + 28363.

It is an arithmetic number, because the mean of its divisors is an integer number (15387775).

Almost surely, 2^61495501 is an apocalyptic number.

It is an amenable number.

61495501 is a deficient number, since it is larger than the sum of its proper divisors (55599).

61495501 is a wasteful number, since it uses less digits than its factorization.

61495501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55598.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 61495501 is about 7841.9067196696. The cubic root of 61495501 is about 394.7127131790.

The spelling of 61495501 in words is "sixty-one million, four hundred ninety-five thousand, five hundred one".