61019901 has 12 divisors (see below), whose sum is σ = 88216128. Its totient is φ = 40644744.

The previous prime is 61019899. The next prime is 61019911. The reversal of 61019901 is 10991016.

It is not a de Polignac number, because 61019901 - 2¹ = 61019899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61019911) 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, 12106 + ... + 16388.

It is an arithmetic number, because the mean of its divisors is an integer number (7351344).

Almost surely, 2^61019901 is an apocalyptic number.

It is an amenable number.

61019901 is a deficient number, since it is larger than the sum of its proper divisors (27196227).

61019901 is a wasteful number, since it uses less digits than its factorization.

61019901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5872 (or 5869 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 27.

The square root of 61019901 is about 7811.5236029855. The cubic root of 61019901 is about 393.6925225247.

The spelling of 61019901 in words is "sixty-one million, nineteen thousand, nine hundred one".