74245545 has 96 divisors (see below), whose sum is σ = 153843840. Its totient is φ = 33684480.

The previous prime is 74245537. The next prime is 74245553. The reversal of 74245545 is 54554247.

It is a happy number.

74245545 is a `hidden beast` number, since 74 + 2 + 45 + 545 = 666.

It is an interprime number because it is at equal distance from previous prime (74245537) and next prime (74245553).

It is not a de Polignac number, because 74245545 - 2³ = 74245537 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 429079 + ... + 429251.

It is an arithmetic number, because the mean of its divisors is an integer number (1602540).

Almost surely, 2^74245545 is an apocalyptic number.

It is an amenable number.

74245545 is an abundant number, since it is smaller than the sum of its proper divisors (79598295).

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

74245545 is a wasteful number, since it uses less digits than its factorization.

74245545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 209 counting only the distinct ones).

The product of its digits is 112000, while the sum is 36.

The square root of 74245545 is about 8616.5854606103. The cubic root of 74245545 is about 420.2974933122.

The spelling of 74245545 in words is "seventy-four million, two hundred forty-five thousand, five hundred forty-five".