61545037 has 2 divisors, whose sum is σ = 61545038. Its totient is φ = 61545036.

The previous prime is 61545019. The next prime is 61545053. The reversal of 61545037 is 73054516.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61168041 + 376996 = 7821^2 + 614^2 .

It is a cyclic number.

It is not a de Polignac number, because 61545037 - 2⁷ = 61544909 is a prime.

It is a Chen prime.

It is equal to p_3648280 and since 61545037 and 3648280 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61545007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30772518 + 30772519.

It is an arithmetic number, because the mean of its divisors is an integer number (30772519).

Almost surely, 2^61545037 is an apocalyptic number.

It is an amenable number.

61545037 is a deficient number, since it is larger than the sum of its proper divisors (1).

61545037 is an equidigital number, since it uses as much as digits as its factorization.

61545037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 61545037 is about 7845.0644994162. The cubic root of 61545037 is about 394.8186680375.

The spelling of 61545037 in words is "sixty-one million, five hundred forty-five thousand, thirty-seven".