61377123 has 32 divisors (see below), whose sum is σ = 89812800. Its totient is φ = 37130240.

The previous prime is 61377119. The next prime is 61377149. The reversal of 61377123 is 32177316.

It is a cyclic number.

It is not a de Polignac number, because 61377123 - 2² = 61377119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61377103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 311461 + ... + 311657.

It is an arithmetic number, because the mean of its divisors is an integer number (2806650).

Almost surely, 2^61377123 is an apocalyptic number.

61377123 is a deficient number, since it is larger than the sum of its proper divisors (28435677).

61377123 is a wasteful number, since it uses less digits than its factorization.

61377123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407.

The product of its digits is 5292, while the sum is 30.

The square root of 61377123 is about 7834.3553021292. The cubic root of 61377123 is about 394.4592782948.

The spelling of 61377123 in words is "sixty-one million, three hundred seventy-seven thousand, one hundred twenty-three".