61602145 has 32 divisors (see below), whose sum is σ = 83329920. Its totient is φ = 43338240.

The previous prime is 61602143. The next prime is 61602157. The reversal of 61602145 is 54120616.

It is not a de Polignac number, because 61602145 - 2¹ = 61602143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61602143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 268891 + ... + 269119.

It is an arithmetic number, because the mean of its divisors is an integer number (2604060).

Almost surely, 2^61602145 is an apocalyptic number.

It is an amenable number.

61602145 is a deficient number, since it is larger than the sum of its proper divisors (21727775).

61602145 is a wasteful number, since it uses less digits than its factorization.

61602145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 61602145 is about 7848.7033961031. The cubic root of 61602145 is about 394.9407484697.

It can be divided in two parts, 61 and 602145, that added together give a palindrome (602206).

The spelling of 61602145 in words is "sixty-one million, six hundred two thousand, one hundred forty-five".