61402145 has 16 divisors (see below), whose sum is σ = 85929600. Its totient is φ = 42103152.

The previous prime is 61402139. The next prime is 61402171. The reversal of 61402145 is 54120416.

It is not a de Polignac number, because 61402145 - 2¹⁰ = 61401121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61402145.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16187 + ... + 19616.

It is an arithmetic number, because the mean of its divisors is an integer number (5370600).

Almost surely, 2^61402145 is an apocalyptic number.

It is an amenable number.

61402145 is a deficient number, since it is larger than the sum of its proper divisors (24527455).

61402145 is an equidigital number, since it uses as much as digits as its factorization.

61402145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35829 (or 35815 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 61402145 is about 7835.9520799964. The cubic root of 61402145 is about 394.5128749152.

The spelling of 61402145 in words is "sixty-one million, four hundred two thousand, one hundred forty-five".