61552165 has 8 divisors (see below), whose sum is σ = 73923480. Its totient is φ = 49201152.

The previous prime is 61552151. The next prime is 61552171. The reversal of 61552165 is 56125516.

It can be written as a sum of positive squares in 4 ways, for example, as 352836 + 61199329 = 594^2 + 7823^2 .

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 61552165 - 2⁷ = 61552037 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2677 + ... + 11413.

It is an arithmetic number, because the mean of its divisors is an integer number (9240435).

Almost surely, 2^61552165 is an apocalyptic number.

It is an amenable number.

61552165 is a deficient number, since it is larger than the sum of its proper divisors (12371315).

61552165 is a wasteful number, since it uses less digits than its factorization.

61552165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10151.

The product of its digits is 9000, while the sum is 31.

The square root of 61552165 is about 7845.5187846311. The cubic root of 61552165 is about 394.8339097692.

The spelling of 61552165 in words is "sixty-one million, five hundred fifty-two thousand, one hundred sixty-five".