61153103 has 4 divisors (see below), whose sum is σ = 66712488. Its totient is φ = 55593720.

The previous prime is 61153093. The next prime is 61153121. The reversal of 61153103 is 30135116.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 61153103 - 2¹⁰ = 61152079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61153123) 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, 2779676 + ... + 2779697.

It is an arithmetic number, because the mean of its divisors is an integer number (16678122).

Almost surely, 2^61153103 is an apocalyptic number.

61153103 is a deficient number, since it is larger than the sum of its proper divisors (5559385).

61153103 is a wasteful number, since it uses less digits than its factorization.

61153103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5559384.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 61153103 is about 7820.0449487199. The cubic root of 61153103 is about 393.9787816998.

Adding to 61153103 its reverse (30135116), we get a palindrome (91288219).

The spelling of 61153103 in words is "sixty-one million, one hundred fifty-three thousand, one hundred three".