61538102 has 4 divisors (see below), whose sum is σ = 92307156. Its totient is φ = 30769050.

The previous prime is 61538101. The next prime is 61538129. The reversal of 61538102 is 20183516.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61538101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15384524 + ... + 15384527.

It is an arithmetic number, because the mean of its divisors is an integer number (23076789).

Almost surely, 2^61538102 is an apocalyptic number.

61538102 is a deficient number, since it is larger than the sum of its proper divisors (30769054).

61538102 is a wasteful number, since it uses less digits than its factorization.

61538102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30769053.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 61538102 is about 7844.6224893235. The cubic root of 61538102 is about 394.8038378662.

The spelling of 61538102 in words is "sixty-one million, five hundred thirty-eight thousand, one hundred two".