61552271 has 8 divisors (see below), whose sum is σ = 67412304. Its totient is φ = 55736320.

The previous prime is 61552247. The next prime is 61552279. The reversal of 61552271 is 17225516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61552271 - 2¹⁸ = 61290127 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 (61552279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8060 + ... + 13713.

It is an arithmetic number, because the mean of its divisors is an integer number (8426538).

Almost surely, 2^61552271 is an apocalyptic number.

61552271 is a deficient number, since it is larger than the sum of its proper divisors (5860033).

61552271 is a wasteful number, since it uses less digits than its factorization.

61552271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22041.

The product of its digits is 4200, while the sum is 29.

The square root of 61552271 is about 7845.5255400770. The cubic root of 61552271 is about 394.8341364191.

Adding to 61552271 its reverse (17225516), we get a palindrome (78777787).

The spelling of 61552271 in words is "sixty-one million, five hundred fifty-two thousand, two hundred seventy-one".