61156055 has 8 divisors (see below), whose sum is σ = 77704272. Its totient is φ = 46046848.

The previous prime is 61156049. The next prime is 61156091. The reversal of 61156055 is 55065116.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61156055 - 2¹⁴ = 61139671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359657 + ... + 359826.

It is an arithmetic number, because the mean of its divisors is an integer number (9713034).

Almost surely, 2^61156055 is an apocalyptic number.

61156055 is a deficient number, since it is larger than the sum of its proper divisors (16548217).

61156055 is a wasteful number, since it uses less digits than its factorization.

61156055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719505.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 61156055 is about 7820.2336921604. The cubic root of 61156055 is about 393.9851210164.

The spelling of 61156055 in words is "sixty-one million, one hundred fifty-six thousand, fifty-five".