61503773 has 8 divisors (see below), whose sum is σ = 65561400. Its totient is φ = 57495040.

The previous prime is 61503769. The next prime is 61503829. The reversal of 61503773 is 37730516.

It can be written as a sum of positive squares in 4 ways, for example, as 20313049 + 41190724 = 4507^2 + 6418^2 .

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 61503773 - 2² = 61503769 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61503713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9608 + ... + 14673.

It is an arithmetic number, because the mean of its divisors is an integer number (8195175).

Almost surely, 2^61503773 is an apocalyptic number.

It is an amenable number.

61503773 is a deficient number, since it is larger than the sum of its proper divisors (4057627).

61503773 is a wasteful number, since it uses less digits than its factorization.

61503773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24447.

The product of its (nonzero) digits is 13230, while the sum is 32.

The square root of 61503773 is about 7842.4341246835. The cubic root of 61503773 is about 394.7304105017.

The spelling of 61503773 in words is "sixty-one million, five hundred three thousand, seven hundred seventy-three".