61431541 has 8 divisors (see below), whose sum is σ = 66895200. Its totient is φ = 56190960.

The previous prime is 61431529. The next prime is 61431583. The reversal of 61431541 is 14513416.

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

It is a cyclic number.

It is not a de Polignac number, because 61431541 - 2⁵ = 61431509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61431511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55195 + ... + 56296.

It is an arithmetic number, because the mean of its divisors is an integer number (8361900).

Almost surely, 2^61431541 is an apocalyptic number.

It is an amenable number.

61431541 is a deficient number, since it is larger than the sum of its proper divisors (5463659).

61431541 is a wasteful number, since it uses less digits than its factorization.

61431541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111539.

The product of its digits is 1440, while the sum is 25.

The square root of 61431541 is about 7837.8275689122. The cubic root of 61431541 is about 394.5758219576.

Adding to 61431541 its reverse (14513416), we get a palindrome (75944957).

The spelling of 61431541 in words is "sixty-one million, four hundred thirty-one thousand, five hundred forty-one".