61430145 has 16 divisors (see below), whose sum is σ = 112329600. Its totient is φ = 28082304.

The previous prime is 61430141. The next prime is 61430153. The reversal of 61430145 is 54103416.

It is not a de Polignac number, because 61430145 - 2² = 61430141 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (61430141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292420 + ... + 292629.

It is an arithmetic number, because the mean of its divisors is an integer number (7020600).

Almost surely, 2^61430145 is an apocalyptic number.

It is an amenable number.

61430145 is a deficient number, since it is larger than the sum of its proper divisors (50899455).

61430145 is a wasteful number, since it uses less digits than its factorization.

61430145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585064.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 61430145 is about 7837.7385131172. The cubic root of 61430145 is about 394.5728330911.

The spelling of 61430145 in words is "sixty-one million, four hundred thirty thousand, one hundred forty-five".