61520148 has 30 divisors (see below), whose sum is σ = 160826666. Its totient is φ = 20506608.

The previous prime is 61520117. The next prime is 61520153. The reversal of 61520148 is 84102516.

61520148 is a `hidden beast` number, since 615 + 2 + 0 + 1 + 48 = 666.

61520148 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 61027344 + 492804 = 7812^2 + 702^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 94615 + ... + 95262.

Almost surely, 2^61520148 is an apocalyptic number.

It is an amenable number.

61520148 is an abundant number, since it is smaller than the sum of its proper divisors (99306518).

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

61520148 is a wasteful number, since it uses less digits than its factorization.

61520148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189893 (or 189882 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 61520148 is about 7843.4780550468. The cubic root of 61520148 is about 394.7654389051.

The spelling of 61520148 in words is "sixty-one million, five hundred twenty thousand, one hundred forty-eight".