61234157 has 2 divisors, whose sum is σ = 61234158. Its totient is φ = 61234156.

The previous prime is 61234141. The next prime is 61234177. The reversal of 61234157 is 75143216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61058596 + 175561 = 7814^2 + 419^2 .

It is a cyclic number.

It is not a de Polignac number, because 61234157 - 2⁴ = 61234141 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61234177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30617078 + 30617079.

It is an arithmetic number, because the mean of its divisors is an integer number (30617079).

Almost surely, 2^61234157 is an apocalyptic number.

It is an amenable number.

61234157 is a deficient number, since it is larger than the sum of its proper divisors (1).

61234157 is an equidigital number, since it uses as much as digits as its factorization.

61234157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 29.

The square root of 61234157 is about 7825.2256836464. The cubic root of 61234157 is about 394.1527682813.

The spelling of 61234157 in words is "sixty-one million, two hundred thirty-four thousand, one hundred fifty-seven".