61121448 has 24 divisors (see below), whose sum is σ = 165537450. Its totient is φ = 20373792.

The previous prime is 61121399. The next prime is 61121507. The reversal of 61121448 is 84412116.

It is a happy number.

61121448 is a `hidden beast` number, since 611 + 2 + 1 + 4 + 48 = 666.

It can be written as a sum of positive squares in only one way, i.e., 61121124 + 324 = 7818^2 + 18^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 424383 + ... + 424526.

Almost surely, 2^61121448 is an apocalyptic number.

It is an amenable number.

61121448 is an abundant number, since it is smaller than the sum of its proper divisors (104416002).

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

61121448 is a wasteful number, since it uses less digits than its factorization.

61121448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848921 (or 848914 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 61121448 is about 7818.0207213847. The cubic root of 61121448 is about 393.9107908690.

The spelling of 61121448 in words is "sixty-one million, one hundred twenty-one thousand, four hundred forty-eight".