61355133 has 12 divisors (see below), whose sum is σ = 101284768. Its totient is φ = 35060040.

The previous prime is 61355131. The next prime is 61355141. The reversal of 61355133 is 33155316.

It is not a de Polignac number, because 61355133 - 2¹ = 61355131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61355097 and 61355106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61355131) 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, 486883 + ... + 487008.

Almost surely, 2^61355133 is an apocalyptic number.

61355133 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

61355133 is a deficient number, since it is larger than the sum of its proper divisors (39929635).

61355133 is a wasteful number, since it uses less digits than its factorization.

61355133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973904 (or 973901 counting only the distinct ones).

The product of its digits is 4050, while the sum is 27.

The square root of 61355133 is about 7832.9517424787. The cubic root of 61355133 is about 394.4121641301.

The spelling of 61355133 in words is "sixty-one million, three hundred fifty-five thousand, one hundred thirty-three".