61557234 has 8 divisors (see below), whose sum is σ = 123114480. Its totient is φ = 20519076.

The previous prime is 61557211. The next prime is 61557247. The reversal of 61557234 is 43275516.

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

61557234 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 61557195 and 61557204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5129764 + ... + 5129775.

It is an arithmetic number, because the mean of its divisors is an integer number (15389310).

Almost surely, 2^61557234 is an apocalyptic number.

61557234 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61557234 is a wasteful number, since it uses less digits than its factorization.

61557234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10259544.

The product of its digits is 25200, while the sum is 33.

The square root of 61557234 is about 7845.8418286376. The cubic root of 61557234 is about 394.8447480457.

The spelling of 61557234 in words is "sixty-one million, five hundred fifty-seven thousand, two hundred thirty-four".