61502377 has 2 divisors, whose sum is σ = 61502378. Its totient is φ = 61502376.

The previous prime is 61502351. The next prime is 61502381. The reversal of 61502377 is 77320516.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51108201 + 10394176 = 7149^2 + 3224^2 .

It is a cyclic number.

It is not a de Polignac number, because 61502377 - 2¹⁹ = 60978089 is a prime.

It is not a weakly prime, because it can be changed into another prime (61502317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30751188 + 30751189.

It is an arithmetic number, because the mean of its divisors is an integer number (30751189).

Almost surely, 2^61502377 is an apocalyptic number.

It is an amenable number.

61502377 is a deficient number, since it is larger than the sum of its proper divisors (1).

61502377 is an equidigital number, since it uses as much as digits as its factorization.

61502377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 61502377 is about 7842.3451211994. The cubic root of 61502377 is about 394.7274239758.

The spelling of 61502377 in words is "sixty-one million, five hundred two thousand, three hundred seventy-seven".