61912237 has 2 divisors, whose sum is σ = 61912238. Its totient is φ = 61912236.

The previous prime is 61912229. The next prime is 61912243. The reversal of 61912237 is 73221916.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46498761 + 15413476 = 6819^2 + 3926^2 .

It is a cyclic number.

It is not a de Polignac number, because 61912237 - 2³ = 61912229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61912199 and 61912208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61912637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30956118 + 30956119.

It is an arithmetic number, because the mean of its divisors is an integer number (30956119).

Almost surely, 2^61912237 is an apocalyptic number.

It is an amenable number.

61912237 is a deficient number, since it is larger than the sum of its proper divisors (1).

61912237 is an equidigital number, since it uses as much as digits as its factorization.

61912237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 31.

The square root of 61912237 is about 7868.4329443670. The cubic root of 61912237 is about 395.6023220065.

The spelling of 61912237 in words is "sixty-one million, nine hundred twelve thousand, two hundred thirty-seven".