61188901 has 12 divisors (see below), whose sum is σ = 64643488. Its totient is φ = 57908664.

The previous prime is 61188893. The next prime is 61188923. The reversal of 61188901 is 10988116.

It is not a de Polignac number, because 61188901 - 2³ = 61188893 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 (61188961) 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, 53926 + ... + 55048.

Almost surely, 2^61188901 is an apocalyptic number.

It is an amenable number.

61188901 is a deficient number, since it is larger than the sum of its proper divisors (3454587).

61188901 is a wasteful number, since it uses less digits than its factorization.

61188901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272 (or 1249 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 34.

The square root of 61188901 is about 7822.3334753768. Note that the first 3 decimals coincide. The cubic root of 61188901 is about 394.0556428925.

The spelling of 61188901 in words is "sixty-one million, one hundred eighty-eight thousand, nine hundred one".