61051398 has 8 divisors (see below), whose sum is σ = 122102808. Its totient is φ = 20350464.

The previous prime is 61051391. The next prime is 61051399. The reversal of 61051398 is 89315016.

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

61051398 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61051391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5087611 + ... + 5087622.

It is an arithmetic number, because the mean of its divisors is an integer number (15262851).

Almost surely, 2^61051398 is an apocalyptic number.

61051398 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.

61051398 is a wasteful number, since it uses less digits than its factorization.

61051398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10175238.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 61051398 is about 7813.5394028571. The cubic root of 61051398 is about 393.7602490655.

It can be divided in two parts, 6105 and 1398, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 61051398 in words is "sixty-one million, fifty-one thousand, three hundred ninety-eight".