61064261 has 4 divisors (see below), whose sum is σ = 61320000. Its totient is φ = 60808524.

The previous prime is 61064251. The next prime is 61064291. The reversal of 61064261 is 16246016.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61064261 - 2¹⁰ = 61063237 is a prime.

It is a super-2 number, since 2×61064261² = 7457687942952242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61064261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61064231) 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, 127511 + ... + 127988.

It is an arithmetic number, because the mean of its divisors is an integer number (15330000).

Almost surely, 2^61064261 is an apocalyptic number.

It is an amenable number.

61064261 is a deficient number, since it is larger than the sum of its proper divisors (255739).

61064261 is a wasteful number, since it uses less digits than its factorization.

61064261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255738.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 61064261 is about 7814.3624819943. The cubic root of 61064261 is about 393.7879010800.

The spelling of 61064261 in words is "sixty-one million, sixty-four thousand, two hundred sixty-one".