145978755 has 16 divisors (see below), whose sum is σ = 251532960. Its totient is φ = 71866368.

The previous prime is 145978751. The next prime is 145978759. The reversal of 145978755 is 557879541.

145978755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (145978751) and next prime (145978759).

It is not a de Polignac number, because 145978755 - 2² = 145978751 is a prime.

It is a super-2 number, since 2×145978755² = 42619593822700050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145978698 and 145978707.

It is not an unprimeable number, because it can be changed into a prime (145978751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 374110 + ... + 374499.

It is an arithmetic number, because the mean of its divisors is an integer number (15720810).

Almost surely, 2^145978755 is an apocalyptic number.

145978755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145978755 is a deficient number, since it is larger than the sum of its proper divisors (105554205).

145978755 is a wasteful number, since it uses less digits than its factorization.

145978755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748630.

The product of its digits is 1764000, while the sum is 51.

The square root of 145978755 is about 12082.1668172559. The cubic root of 145978755 is about 526.5382008323.

The spelling of 145978755 in words is "one hundred forty-five million, nine hundred seventy-eight thousand, seven hundred fifty-five".