61272319 has 4 divisors (see below), whose sum is σ = 61583544. Its totient is φ = 60961096.

The previous prime is 61272313. The next prime is 61272347. The reversal of 61272319 is 91327216.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61272319 - 2⁹ = 61271807 is a prime.

It is a super-2 number, since 2×61272319² = 7508594151275522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61272313) 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, 155317 + ... + 155710.

It is an arithmetic number, because the mean of its divisors is an integer number (15395886).

Almost surely, 2^61272319 is an apocalyptic number.

61272319 is a deficient number, since it is larger than the sum of its proper divisors (311225).

61272319 is a wasteful number, since it uses less digits than its factorization.

61272319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311224.

The product of its digits is 4536, while the sum is 31.

The square root of 61272319 is about 7827.6636999810. The cubic root of 61272319 is about 394.2346318197.

The spelling of 61272319 in words is "sixty-one million, two hundred seventy-two thousand, three hundred nineteen".