145372550 has 12 divisors (see below), whose sum is σ = 270393036. Its totient is φ = 58149000.

The previous prime is 145372543. The next prime is 145372567. The reversal of 145372550 is 55273541.

It is a super-2 number, since 2×145372550² = 42266356587005000, 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 5 ways as a sum of consecutive naturals, for example, 1453676 + ... + 1453775.

It is an arithmetic number, because the mean of its divisors is an integer number (22532753).

Almost surely, 2^145372550 is an apocalyptic number.

145372550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145372550 is a deficient number, since it is larger than the sum of its proper divisors (125020486).

145372550 is a wasteful number, since it uses less digits than its factorization.

145372550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2907463 (or 2907458 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 145372550 is about 12057.0539519403. The cubic root of 145372550 is about 525.8083390451.

Subtracting from 145372550 its reverse (55273541), we obtain a palindrome (90099009).

The spelling of 145372550 in words is "one hundred forty-five million, three hundred seventy-two thousand, five hundred fifty".