123250051 has 16 divisors (see below), whose sum is σ = 133293600. Its totient is φ = 113541120.

The previous prime is 123250037. The next prime is 123250063. The reversal of 123250051 is 150052321.

It is a 15-Lehmer number, since φ(123250051) divides (123250051-1)¹⁵.

It is a cyclic number.

It is not a de Polignac number, because 123250051 - 2¹⁹ = 122725763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123250021) 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 15 ways as a sum of consecutive naturals, for example, 274275 + ... + 274723.

It is an arithmetic number, because the mean of its divisors is an integer number (8330850).

Almost surely, 2^123250051 is an apocalyptic number.

123250051 is a deficient number, since it is larger than the sum of its proper divisors (10043549).

123250051 is a wasteful number, since it uses less digits than its factorization.

123250051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 123250051 is about 11101.8039525115. The cubic root of 123250051 is about 497.6557609299.

The spelling of 123250051 in words is "one hundred twenty-three million, two hundred fifty thousand, fifty-one".