61504229 has 2 divisors, whose sum is σ = 61504230. Its totient is φ = 61504228.

The previous prime is 61504213. The next prime is 61504241. The reversal of 61504229 is 92240516.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42276004 + 19228225 = 6502^2 + 4385^2 .

It is a cyclic number.

It is not a de Polignac number, because 61504229 - 2⁴ = 61504213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61501229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30752114 + 30752115.

It is an arithmetic number, because the mean of its divisors is an integer number (30752115).

Almost surely, 2^61504229 is an apocalyptic number.

It is an amenable number.

61504229 is a deficient number, since it is larger than the sum of its proper divisors (1).

61504229 is an equidigital number, since it uses as much as digits as its factorization.

61504229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 61504229 is about 7842.4631972359. The cubic root of 61504229 is about 394.7313860333.

The spelling of 61504229 in words is "sixty-one million, five hundred four thousand, two hundred twenty-nine".