61424137 has 2 divisors, whose sum is σ = 61424138. Its totient is φ = 61424136.

The previous prime is 61424123. The next prime is 61424147. The reversal of 61424137 is 73142416.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38489616 + 22934521 = 6204^2 + 4789^2 .

It is a cyclic number.

It is not a de Polignac number, because 61424137 - 2¹⁹ = 60899849 is a prime.

It is not a weakly prime, because it can be changed into another prime (61424147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30712068 + 30712069.

It is an arithmetic number, because the mean of its divisors is an integer number (30712069).

Almost surely, 2^61424137 is an apocalyptic number.

It is an amenable number.

61424137 is a deficient number, since it is larger than the sum of its proper divisors (1).

61424137 is an equidigital number, since it uses as much as digits as its factorization.

61424137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 28.

The square root of 61424137 is about 7837.3552299229. The cubic root of 61424137 is about 394.5599693152.

The spelling of 61424137 in words is "sixty-one million, four hundred twenty-four thousand, one hundred thirty-seven".