61283505 has 8 divisors (see below), whose sum is σ = 98053632. Its totient is φ = 32684528.

The previous prime is 61283429. The next prime is 61283513. The reversal of 61283505 is 50538216.

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 61283505 - 2⁹ = 61282993 is a prime.

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, 2042769 + ... + 2042798.

It is an arithmetic number, because the mean of its divisors is an integer number (12256704).

Almost surely, 2^61283505 is an apocalyptic number.

It is an amenable number.

61283505 is a deficient number, since it is larger than the sum of its proper divisors (36770127).

61283505 is a wasteful number, since it uses less digits than its factorization.

61283505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4085575.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 61283505 is about 7828.3781845284. The cubic root of 61283505 is about 394.2586211205.

The spelling of 61283505 in words is "sixty-one million, two hundred eighty-three thousand, five hundred five".