61248911 has 4 divisors (see below), whose sum is σ = 61268424. Its totient is φ = 61229400.

The previous prime is 61248893. The next prime is 61248917. The reversal of 61248911 is 11984216.

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 61248911 - 2¹⁴ = 61232527 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 (61248917) 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, 3860 + ... + 11721.

It is an arithmetic number, because the mean of its divisors is an integer number (15317106).

Almost surely, 2^61248911 is an apocalyptic number.

61248911 is a deficient number, since it is larger than the sum of its proper divisors (19513).

61248911 is a wasteful number, since it uses less digits than its factorization.

61248911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19512.

The product of its digits is 3456, while the sum is 32.

The square root of 61248911 is about 7826.1683472821. The cubic root of 61248911 is about 394.1844219815.

The spelling of 61248911 in words is "sixty-one million, two hundred forty-eight thousand, nine hundred eleven".