61256133 has 12 divisors (see below), whose sum is σ = 93138240. Its totient is φ = 38687976.

The previous prime is 61256113. The next prime is 61256137. The reversal of 61256133 is 33165216.

It is not a de Polignac number, because 61256133 - 2¹⁰ = 61255109 is a prime.

It is a super-2 number, since 2×61256133² = 7504627660227378, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61256097 and 61256106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61256137) 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, 178941 + ... + 179282.

It is an arithmetic number, because the mean of its divisors is an integer number (7761520).

Almost surely, 2^61256133 is an apocalyptic number.

It is an amenable number.

61256133 is a deficient number, since it is larger than the sum of its proper divisors (31882107).

61256133 is a wasteful number, since it uses less digits than its factorization.

61256133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358248 (or 358245 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 61256133 is about 7826.6297344387. The cubic root of 61256133 is about 394.1999144366.

The spelling of 61256133 in words is "sixty-one million, two hundred fifty-six thousand, one hundred thirty-three".