61541603 has 4 divisors (see below), whose sum is σ = 63526848. Its totient is φ = 59556360.

The previous prime is 61541587. The next prime is 61541611. The reversal of 61541603 is 30614516.

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 61541603 - 2⁴ = 61541587 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (61541653) 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, 992576 + ... + 992637.

It is an arithmetic number, because the mean of its divisors is an integer number (15881712).

Almost surely, 2^61541603 is an apocalyptic number.

61541603 is a deficient number, since it is larger than the sum of its proper divisors (1985245).

61541603 is a wasteful number, since it uses less digits than its factorization.

61541603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985244.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 61541603 is about 7844.8456326431. The cubic root of 61541603 is about 394.8113247293.

The spelling of 61541603 in words is "sixty-one million, five hundred forty-one thousand, six hundred three".