145542550 has 24 divisors (see below), whose sum is σ = 276473376. Its totient is φ = 56977440.

The previous prime is 145542533. The next prime is 145542563. The reversal of 145542550 is 55245541.

145542550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28617 + ... + 33316.

It is an arithmetic number, because the mean of its divisors is an integer number (11519724).

Almost surely, 2^145542550 is an apocalyptic number.

145542550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145542550 is a deficient number, since it is larger than the sum of its proper divisors (130930826).

145542550 is a wasteful number, since it uses less digits than its factorization.

145542550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61992 (or 61987 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 145542550 is about 12064.1017071310. The cubic root of 145542550 is about 526.0132209084.

The spelling of 145542550 in words is "one hundred forty-five million, five hundred forty-two thousand, five hundred fifty".