61038550 has 24 divisors (see below), whose sum is σ = 118470096. Its totient is φ = 23353440.

The previous prime is 61038529. The next prime is 61038553. The reversal of 61038550 is 5583016.

61038550 = T₄₈₂ + T₄₈₃ + ... + T₇₈₁.

It is a super-2 number, since 2×61038550² = 7451409172205000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61038553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25389 + ... + 27688.

It is an arithmetic number, because the mean of its divisors is an integer number (4936254).

Almost surely, 2^61038550 is an apocalyptic number.

61038550 is a deficient number, since it is larger than the sum of its proper divisors (57431546).

61038550 is a wasteful number, since it uses less digits than its factorization.

61038550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53112 (or 53107 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 61038550 is about 7812.7171969808. The cubic root of 61038550 is about 393.7326254196.

The spelling of 61038550 in words is "sixty-one million, thirty-eight thousand, five hundred fifty".