145401456 has 40 divisors (see below), whose sum is σ = 383618304. Its totient is φ = 47435200.

The previous prime is 145401413. The next prime is 145401461. The reversal of 145401456 is 654104541.

It is a super-2 number, since 2×145401456² = 42283166813839872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29970 + ... + 34481.

Almost surely, 2^145401456 is an apocalyptic number.

145401456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

145401456 is an abundant number, since it is smaller than the sum of its proper divisors (238216848).

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

145401456 is a wasteful number, since it uses less digits than its factorization.

145401456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64509 (or 64503 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 145401456 is about 12058.2526097275. The cubic root of 145401456 is about 525.8431874594.

Adding to 145401456 its reverse (654104541), we get a palindrome (799505997).

The spelling of 145401456 in words is "one hundred forty-five million, four hundred one thousand, four hundred fifty-six".