61872101 has 8 divisors (see below), whose sum is σ = 63050400. Its totient is φ = 60704272.

The previous prime is 61872067. The next prime is 61872119. The reversal of 61872101 is 10127816.

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 61872101 - 2²² = 57677797 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61872131) 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, 9866 + ... + 14868.

It is an arithmetic number, because the mean of its divisors is an integer number (7881300).

Almost surely, 2^61872101 is an apocalyptic number.

It is an amenable number.

61872101 is a deficient number, since it is larger than the sum of its proper divisors (1178299).

61872101 is a wasteful number, since it uses less digits than its factorization.

61872101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5235.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 61872101 is about 7865.8820865813. The cubic root of 61872101 is about 395.5168174931.

Adding to 61872101 its reverse (10127816), we get a palindrome (71999917).

The spelling of 61872101 in words is "sixty-one million, eight hundred seventy-two thousand, one hundred one".