145401457 has 12 divisors (see below), whose sum is σ = 151375888. Its totient is φ = 139629600.

The previous prime is 145401413. The next prime is 145401461. The reversal of 145401457 is 754104541.

It is not a de Polignac number, because 145401457 - 2²⁷ = 11183729 is a prime.

It is a super-2 number, since 2×145401457² = 42283167395445698, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145401407) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 111982 + ... + 113272.

Almost surely, 2^145401457 is an apocalyptic number.

It is an amenable number.

145401457 is a deficient number, since it is larger than the sum of its proper divisors (5974431).

145401457 is an equidigital number, since it uses as much as digits as its factorization.

145401457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440 (or 1399 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 145401457 is about 12058.2526511929. The cubic root of 145401457 is about 525.8431886649.

Adding to 145401457 its reverse (754104541), we get a palindrome (899505998).

The spelling of 145401457 in words is "one hundred forty-five million, four hundred one thousand, four hundred fifty-seven".