61049391 has 12 divisors (see below), whose sum is σ = 88143048. Its totient is φ = 37568544.

The previous prime is 61049357. The next prime is 61049393. The reversal of 61049391 is 19394016.

It is a de Polignac number, because none of the positive numbers 2^k-61049391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61049393) 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, 59700 + ... + 60713.

It is an arithmetic number, because the mean of its divisors is an integer number (7345254).

Almost surely, 2^61049391 is an apocalyptic number.

61049391 is a deficient number, since it is larger than the sum of its proper divisors (27093657).

61049391 is a wasteful number, since it uses less digits than its factorization.

61049391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120442 (or 120429 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 61049391 is about 7813.4109708885. The cubic root of 61049391 is about 393.7559342013.

The spelling of 61049391 in words is "sixty-one million, forty-nine thousand, three hundred ninety-one".