61532473 has 4 divisors (see below), whose sum is σ = 61555060. Its totient is φ = 61509888.

The previous prime is 61532423. The next prime is 61532477. The reversal of 61532473 is 37423516.

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 19386409 + 42146064 = 4403^2 + 6492^2 .

It is a cyclic number.

It is not a de Polignac number, because 61532473 - 2⁹ = 61531961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61532477) 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, 6540 + ... + 12877.

It is an arithmetic number, because the mean of its divisors is an integer number (15388765).

Almost surely, 2^61532473 is an apocalyptic number.

It is an amenable number.

61532473 is a deficient number, since it is larger than the sum of its proper divisors (22587).

61532473 is a wasteful number, since it uses less digits than its factorization.

61532473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22586.

The product of its digits is 15120, while the sum is 31.

The square root of 61532473 is about 7844.2637003099. The cubic root of 61532473 is about 394.7917996953.

Adding to 61532473 its reverse (37423516), we get a palindrome (98955989).

The spelling of 61532473 in words is "sixty-one million, five hundred thirty-two thousand, four hundred seventy-three".