61532471 has 16 divisors (see below), whose sum is σ = 82618368. Its totient is φ = 44258400.

The previous prime is 61532423. The next prime is 61532477. The reversal of 61532471 is 17423516.

It is a cyclic number.

It is not a de Polignac number, because 61532471 - 2¹⁴ = 61516087 is a prime.

It is a super-3 number, since 3×61532471³ (a number of 24 digits) contains 333 as substring.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 29735 + ... + 31736.

It is an arithmetic number, because the mean of its divisors is an integer number (5163648).

Almost surely, 2^61532471 is an apocalyptic number.

61532471 is a deficient number, since it is larger than the sum of its proper divisors (21085897).

61532471 is a wasteful number, since it uses less digits than its factorization.

61532471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61502.

The product of its digits is 5040, while the sum is 29.

The square root of 61532471 is about 7844.2635728282. The cubic root of 61532471 is about 394.7917954180.

Adding to 61532471 its reverse (17423516), we get a palindrome (78955987).

The spelling of 61532471 in words is "sixty-one million, five hundred thirty-two thousand, four hundred seventy-one".