61542963 has 16 divisors (see below), whose sum is σ = 95139840. Its totient is φ = 39244392.

The previous prime is 61542937. The next prime is 61542973. The reversal of 61542963 is 36924516.

It is a happy number.

61542963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61542963 - 2⁵ = 61542931 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (61542913) 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, 48931 + ... + 50172.

It is an arithmetic number, because the mean of its divisors is an integer number (5946240).

Almost surely, 2^61542963 is an apocalyptic number.

61542963 is a deficient number, since it is larger than the sum of its proper divisors (33596877).

61542963 is a wasteful number, since it uses less digits than its factorization.

61542963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99135 (or 99129 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 61542963 is about 7844.9323132835. The cubic root of 61542963 is about 394.8142330028.

The spelling of 61542963 in words is "sixty-one million, five hundred forty-two thousand, nine hundred sixty-three".