61246143 has 12 divisors (see below), whose sum is σ = 101104848. Its totient is φ = 34997760.

The previous prime is 61246127. The next prime is 61246181. The reversal of 61246143 is 34164216.

61246143 is a `hidden beast` number, since 612 + 4 + 6 + 1 + 43 = 666.

It is not a de Polignac number, because 61246143 - 2⁴ = 61246127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61241143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 486018 + ... + 486143.

It is an arithmetic number, because the mean of its divisors is an integer number (8425404).

Almost surely, 2^61246143 is an apocalyptic number.

61246143 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

61246143 is a deficient number, since it is larger than the sum of its proper divisors (39858705).

61246143 is a wasteful number, since it uses less digits than its factorization.

61246143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972174 (or 972171 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 61246143 is about 7825.9915026788. The cubic root of 61246143 is about 394.1784838138.

The spelling of 61246143 in words is "sixty-one million, two hundred forty-six thousand, one hundred forty-three".