61373443 has 2 divisors, whose sum is σ = 61373444. Its totient is φ = 61373442.

The previous prime is 61373423. The next prime is 61373447. The reversal of 61373443 is 34437316.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61373443 is a prime.

It is equal to p_3638704 and since 61373443 and 3638704 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (61373447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30686721 + 30686722.

It is an arithmetic number, because the mean of its divisors is an integer number (30686722).

Almost surely, 2^61373443 is an apocalyptic number.

61373443 is a deficient number, since it is larger than the sum of its proper divisors (1).

61373443 is an equidigital number, since it uses as much as digits as its factorization.

61373443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 31.

The square root of 61373443 is about 7834.1204356328. The cubic root of 61373443 is about 394.4513945802.

It can be divided in two parts, 61373 and 443, that added together give a palindrome (61816).

The spelling of 61373443 in words is "sixty-one million, three hundred seventy-three thousand, four hundred forty-three".