61512343 has 4 divisors (see below), whose sum is σ = 61689960. Its totient is φ = 61334728.

The previous prime is 61512337. The next prime is 61512359. The reversal of 61512343 is 34321516.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61512343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61512743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88288 + ... + 88981.

It is an arithmetic number, because the mean of its divisors is an integer number (15422490).

Almost surely, 2^61512343 is an apocalyptic number.

61512343 is a deficient number, since it is larger than the sum of its proper divisors (177617).

61512343 is a wasteful number, since it uses less digits than its factorization.

61512343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177616.

The product of its digits is 2160, while the sum is 25.

The square root of 61512343 is about 7842.9804921344. The cubic root of 61512343 is about 394.7487436995.

Adding to 61512343 its reverse (34321516), we get a palindrome (95833859).

The spelling of 61512343 in words is "sixty-one million, five hundred twelve thousand, three hundred forty-three".