61573151 has 2 divisors, whose sum is σ = 61573152. Its totient is φ = 61573150.

The previous prime is 61573147. The next prime is 61573163. The reversal of 61573151 is 15137516.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61573151 - 2² = 61573147 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61573111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30786575 + 30786576.

It is an arithmetic number, because the mean of its divisors is an integer number (30786576).

Almost surely, 2^61573151 is an apocalyptic number.

61573151 is a deficient number, since it is larger than the sum of its proper divisors (1).

61573151 is an equidigital number, since it uses as much as digits as its factorization.

61573151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3150, while the sum is 29.

The square root of 61573151 is about 7846.8561220402. The cubic root of 61573151 is about 394.8787770939.

The spelling of 61573151 in words is "sixty-one million, five hundred seventy-three thousand, one hundred fifty-one".