61203145 has 16 divisors (see below), whose sum is σ = 80275968. Its totient is φ = 44593920.

The previous prime is 61203133. The next prime is 61203157. The reversal of 61203145 is 54130216.

It is an interprime number because it is at equal distance from previous prime (61203133) and next prime (61203157).

It is not a de Polignac number, because 61203145 - 2⁵ = 61203113 is a prime.

It is a Duffinian number.

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, 8979 + ... + 14248.

It is an arithmetic number, because the mean of its divisors is an integer number (5017248).

Almost surely, 2^61203145 is an apocalyptic number.

It is an amenable number.

61203145 is a deficient number, since it is larger than the sum of its proper divisors (19072823).

61203145 is a wasteful number, since it uses less digits than its factorization.

61203145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23280.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 61203145 is about 7823.2438924017. The cubic root of 61203145 is about 394.0862175720.

The spelling of 61203145 in words is "sixty-one million, two hundred three thousand, one hundred forty-five".