61123538 has 16 divisors (see below), whose sum is σ = 107339904. Its totient is φ = 25556640.

The previous prime is 61123523. The next prime is 61123541. The reversal of 61123538 is 83532116.

It is a self number, because there is not a number n which added to its sum of digits gives 61123538.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52670 + ... + 53817.

It is an arithmetic number, because the mean of its divisors is an integer number (6708744).

Almost surely, 2^61123538 is an apocalyptic number.

61123538 is a deficient number, since it is larger than the sum of its proper divisors (46216366).

61123538 is a wasteful number, since it uses less digits than its factorization.

61123538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106537.

The product of its digits is 4320, while the sum is 29.

The square root of 61123538 is about 7818.1543857870. The cubic root of 61123538 is about 393.9152806414.

The spelling of 61123538 in words is "sixty-one million, one hundred twenty-three thousand, five hundred thirty-eight".