61523123 has 8 divisors (see below), whose sum is σ = 64303680. Its totient is φ = 58786560.

The previous prime is 61523117. The next prime is 61523149. The reversal of 61523123 is 32132516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61523123 - 2¹² = 61519027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61523023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8123 + ... + 13748.

It is an arithmetic number, because the mean of its divisors is an integer number (8037960).

Almost surely, 2^61523123 is an apocalyptic number.

61523123 is a deficient number, since it is larger than the sum of its proper divisors (2780557).

61523123 is a wasteful number, since it uses less digits than its factorization.

61523123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21997.

The product of its digits is 1080, while the sum is 23.

The square root of 61523123 is about 7843.6677007635. The cubic root of 61523123 is about 394.7718021768.

Adding to 61523123 its reverse (32132516), we get a palindrome (93655639).

The spelling of 61523123 in words is "sixty-one million, five hundred twenty-three thousand, one hundred twenty-three".