145542772 has 24 divisors (see below), whose sum is σ = 257632200. Its totient is φ = 71938560.

The previous prime is 145542739. The next prime is 145542779. The reversal of 145542772 is 277245541.

145542772 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 4 ways, for example, as 5262436 + 140280336 = 2294^2 + 11844^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145542779) 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, 190872 + ... + 191632.

It is an arithmetic number, because the mean of its divisors is an integer number (10734675).

Almost surely, 2^145542772 is an apocalyptic number.

It is an amenable number.

145542772 is a deficient number, since it is larger than the sum of its proper divisors (112089428).

145542772 is a wasteful number, since it uses less digits than its factorization.

145542772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251 (or 1249 counting only the distinct ones).

The product of its digits is 78400, while the sum is 37.

The square root of 145542772 is about 12064.1109079783. The cubic root of 145542772 is about 526.0134883557.

The spelling of 145542772 in words is "one hundred forty-five million, five hundred forty-two thousand, seven hundred seventy-two".