61253123 has 4 divisors (see below), whose sum is σ = 61491720. Its totient is φ = 61014528.

The previous prime is 61253099. The next prime is 61253147. The reversal of 61253123 is 32135216.

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 (61253099) and next prime (61253147).

It is a cyclic number.

It is not a de Polignac number, because 61253123 - 2²² = 57058819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61253323) 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, 118913 + ... + 119426.

It is an arithmetic number, because the mean of its divisors is an integer number (15372930).

Almost surely, 2^61253123 is an apocalyptic number.

61253123 is a deficient number, since it is larger than the sum of its proper divisors (238597).

61253123 is a wasteful number, since it uses less digits than its factorization.

61253123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238596.

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

The square root of 61253123 is about 7826.4374398573. The cubic root of 61253123 is about 394.1934576074.

Adding to 61253123 its reverse (32135216), we get a palindrome (93388339).

It can be divided in two parts, 612 and 53123, that added together give a palindrome (53735).

The spelling of 61253123 in words is "sixty-one million, two hundred fifty-three thousand, one hundred twenty-three".