61418523 has 4 divisors (see below), whose sum is σ = 81891368. Its totient is φ = 40945680.

The previous prime is 61418509. The next prime is 61418537. The reversal of 61418523 is 32581416.

61418523 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 an interprime number because it is at equal distance from previous prime (61418509) and next prime (61418537).

It is not a de Polignac number, because 61418523 - 2⁹ = 61418011 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61418023) 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, 10236418 + ... + 10236423.

It is an arithmetic number, because the mean of its divisors is an integer number (20472842).

Almost surely, 2^61418523 is an apocalyptic number.

61418523 is a deficient number, since it is larger than the sum of its proper divisors (20472845).

61418523 is a wasteful number, since it uses less digits than its factorization.

61418523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20472844.

The product of its digits is 5760, while the sum is 30.

The square root of 61418523 is about 7836.9970652030. The cubic root of 61418523 is about 394.5479483776.

Adding to 61418523 its reverse (32581416), we get a palindrome (93999939).

The spelling of 61418523 in words is "sixty-one million, four hundred eighteen thousand, five hundred twenty-three".