75138063 has 64 divisors (see below), whose sum is σ = 136249344. Its totient is φ = 35568000.

The previous prime is 75138059. The next prime is 75138067. The reversal of 75138063 is 36083157.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (75138059) and next prime (75138067).

It is not a de Polignac number, because 75138063 - 2² = 75138059 is a prime.

It is a super-2 number, since 2×75138063² = 11291457022783938, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75138067) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 393298 + ... + 393488.

It is an arithmetic number, because the mean of its divisors is an integer number (2128896).

Almost surely, 2^75138063 is an apocalyptic number.

75138063 is a deficient number, since it is larger than the sum of its proper divisors (61111281).

75138063 is a wasteful number, since it uses less digits than its factorization.

75138063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 75138063 is about 8668.2214438719. The cubic root of 75138063 is about 421.9749447925.

It can be divided in two parts, 7513 and 8063, that added together give a triangular number (15576 = T₁₇₆).

The spelling of 75138063 in words is "seventy-five million, one hundred thirty-eight thousand, sixty-three".