145477251 has 12 divisors (see below), whose sum is σ = 211236480. Its totient is φ = 96475920.

The previous prime is 145477249. The next prime is 145477289. The reversal of 145477251 is 152774541.

145477251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145477251 - 2¹ = 145477249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145477201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40596 + ... + 44033.

It is an arithmetic number, because the mean of its divisors is an integer number (17603040).

Almost surely, 2^145477251 is an apocalyptic number.

145477251 is a deficient number, since it is larger than the sum of its proper divisors (65759229).

145477251 is a wasteful number, since it uses less digits than its factorization.

145477251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84826 (or 84823 counting only the distinct ones).

The product of its digits is 39200, while the sum is 36.

The square root of 145477251 is about 12061.3950685648. The cubic root of 145477251 is about 525.9345422552.

The spelling of 145477251 in words is "one hundred forty-five million, four hundred seventy-seven thousand, two hundred fifty-one".