61548931 has 4 divisors (see below), whose sum is σ = 61602664. Its totient is φ = 61495200.

The previous prime is 61548917. The next prime is 61548941. The reversal of 61548931 is 13984516.

61548931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 61548931 - 2⁹ = 61548419 is a prime.

It is a super-2 number, since 2×61548931² = 7576541814485522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61548901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25110 + ... + 27451.

It is an arithmetic number, because the mean of its divisors is an integer number (15400666).

Almost surely, 2^61548931 is an apocalyptic number.

61548931 is a deficient number, since it is larger than the sum of its proper divisors (53733).

61548931 is a wasteful number, since it uses less digits than its factorization.

61548931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53732.

The product of its digits is 25920, while the sum is 37.

The square root of 61548931 is about 7845.3126770066. The cubic root of 61548931 is about 394.8269946849.

The spelling of 61548931 in words is "sixty-one million, five hundred forty-eight thousand, nine hundred thirty-one".