61351543 has 8 divisors (see below), whose sum is σ = 68026896. Its totient is φ = 54859200.

The previous prime is 61351531. The next prime is 61351547. The reversal of 61351543 is 34515316.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61351543 - 2¹³ = 61343351 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 (61351547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45046 + ... + 46387.

It is an arithmetic number, because the mean of its divisors is an integer number (8503362).

Almost surely, 2^61351543 is an apocalyptic number.

61351543 is a deficient number, since it is larger than the sum of its proper divisors (6675353).

61351543 is a wasteful number, since it uses less digits than its factorization.

61351543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91505.

The product of its digits is 5400, while the sum is 28.

The square root of 61351543 is about 7832.7225790270. The cubic root of 61351543 is about 394.4044713899.

Adding to 61351543 its reverse (34515316), we get a palindrome (95866859).

The spelling of 61351543 in words is "sixty-one million, three hundred fifty-one thousand, five hundred forty-three".