61273576 has 64 divisors (see below), whose sum is σ = 149748480. Its totient is φ = 22809600.

The previous prime is 61273573. The next prime is 61273601. The reversal of 61273576 is 67537216.

It is a super-2 number, since 2×61273576² = 7508902231655552, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61273573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9901 + ... + 14851.

It is an arithmetic number, because the mean of its divisors is an integer number (2339820).

Almost surely, 2^61273576 is an apocalyptic number.

61273576 is the 4951-st heptagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61273576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74874240).

61273576 is an abundant number, since it is smaller than the sum of its proper divisors (88474904).

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

61273576 is a wasteful number, since it uses less digits than its factorization.

61273576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4994 (or 4990 counting only the distinct ones).

The product of its digits is 52920, while the sum is 37.

The square root of 61273576 is about 7827.7439917258. The cubic root of 61273576 is about 394.2373277057.

The spelling of 61273576 in words is "sixty-one million, two hundred seventy-three thousand, five hundred seventy-six".