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75245401 = 71129311087
BaseRepresentation
bin1000111110000…
…10011101011001
312020120212021201
410133002131121
5123230323101
611244434201
71602401230
oct437023531
9166525251
1075245401
1139523a90
1221248961
131278720a
149dc9b17
156914e01
hex47c2759

75245401 has 32 divisors (see below), whose sum is σ = 100270080. Its totient is φ = 54734400.

The previous prime is 75245389. The next prime is 75245411. The reversal of 75245401 is 10454257.

It is not a de Polignac number, because 75245401 - 25 = 75245369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75245401.

It is not an unprimeable number, because it can be changed into a prime (75245411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68680 + ... + 69766.

It is an arithmetic number, because the mean of its divisors is an integer number (3133440).

Almost surely, 275245401 is an apocalyptic number.

It is an amenable number.

75245401 is a deficient number, since it is larger than the sum of its proper divisors (25024679).

75245401 is a wasteful number, since it uses less digits than its factorization.

75245401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 75245401 is about 8674.4107004453. The cubic root of 75245401 is about 422.1757857236.

Adding to 75245401 its reverse (10454257), we get a palindrome (85699658).

The spelling of 75245401 in words is "seventy-five million, two hundred forty-five thousand, four hundred one".

Divisors: 1 7 11 29 31 77 203 217 319 341 899 1087 2233 2387 6293 7609 9889 11957 31523 33697 69223 83699 220661 235879 346753 370667 977213 2427271 2594669 6840491 10749343 75245401