61511055 has 8 divisors (see below), whose sum is σ = 98417712. Its totient is φ = 32805888.

The previous prime is 61511033. The next prime is 61511071. The reversal of 61511055 is 55011516.

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

It is not a de Polignac number, because 61511055 - 2⁷ = 61510927 is a prime.

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, 2050354 + ... + 2050383.

It is an arithmetic number, because the mean of its divisors is an integer number (12302214).

Almost surely, 2^61511055 is an apocalyptic number.

61511055 is a deficient number, since it is larger than the sum of its proper divisors (36906657).

61511055 is a wasteful number, since it uses less digits than its factorization.

61511055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4100745.

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 61511055 is about 7842.8983800633. The cubic root of 61511055 is about 394.7459884805.

The spelling of 61511055 in words is "sixty-one million, five hundred eleven thousand, fifty-five".