61291134 has 16 divisors (see below), whose sum is σ = 136202640. Its totient is φ = 20430360.

The previous prime is 61291133. The next prime is 61291141. The reversal of 61291134 is 43119216.

61291134 is a `hidden beast` number, since 612 + 9 + 11 + 34 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 61291098 and 61291107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61291133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 567457 + ... + 567564.

It is an arithmetic number, because the mean of its divisors is an integer number (8512665).

Almost surely, 2^61291134 is an apocalyptic number.

61291134 is an abundant number, since it is smaller than the sum of its proper divisors (74911506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61291134 is a wasteful number, since it uses less digits than its factorization.

61291134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135032 (or 1135026 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 61291134 is about 7828.8654350423. The cubic root of 61291134 is about 394.2749804666.

It can be divided in two parts, 61291 and 134, that added together give a triangular number (61425 = T₃₅₀).

The spelling of 61291134 in words is "sixty-one million, two hundred ninety-one thousand, one hundred thirty-four".