61555343 has 2 divisors, whose sum is σ = 61555344. Its totient is φ = 61555342.

The previous prime is 61555331. The next prime is 61555381. The reversal of 61555343 is 34355516.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61555343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61555393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30777671 + 30777672.

It is an arithmetic number, because the mean of its divisors is an integer number (30777672).

Almost surely, 2^61555343 is an apocalyptic number.

61555343 is a deficient number, since it is larger than the sum of its proper divisors (1).

61555343 is an equidigital number, since it uses as much as digits as its factorization.

61555343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27000, while the sum is 32.

The square root of 61555343 is about 7845.7213180179. The cubic root of 61555343 is about 394.8407048758.

The spelling of 61555343 in words is "sixty-one million, five hundred fifty-five thousand, three hundred forty-three".