61495506 has 48 divisors (see below), whose sum is σ = 138498048. Its totient is φ = 19699200.

The previous prime is 61495471. The next prime is 61495513. The reversal of 61495506 is 60559416.

61495506 is a `hidden beast` number, since 6 + 149 + 5 + 506 = 666.

61495506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106290 + ... + 106866.

It is an arithmetic number, because the mean of its divisors is an integer number (2885376).

Almost surely, 2^61495506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61495506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69249024).

61495506 is an abundant number, since it is smaller than the sum of its proper divisors (77002542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61495506 is a wasteful number, since it uses less digits than its factorization.

61495506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807 (or 804 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 61495506 is about 7841.9070384697. The cubic root of 61495506 is about 394.7127238766.

It can be divided in two parts, 61495 and 506, that added together give a square (62001 = 249²).

The spelling of 61495506 in words is "sixty-one million, four hundred ninety-five thousand, five hundred six".