61049511 has 8 divisors (see below), whose sum is σ = 90443760. Its totient is φ = 40699656.

The previous prime is 61049507. The next prime is 61049543. The reversal of 61049511 is 11594016.

61049511 is a `hidden beast` number, since 610 + 49 + 5 + 1 + 1 = 666.

It is not a de Polignac number, because 61049511 - 2² = 61049507 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2261093 = 61049511 / (6 + 1 + 0 + 4 + 9 + 5 + 1 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61049501) 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, 1130520 + ... + 1130573.

It is an arithmetic number, because the mean of its divisors is an integer number (11305470).

Almost surely, 2^61049511 is an apocalyptic number.

61049511 is a deficient number, since it is larger than the sum of its proper divisors (29394249).

61049511 is a wasteful number, since it uses less digits than its factorization.

61049511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261102 (or 2261096 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 61049511 is about 7813.4186499893. The cubic root of 61049511 is about 393.7561921929.

The spelling of 61049511 in words is "sixty-one million, forty-nine thousand, five hundred eleven".